List of biomedical topics, P to T

This is a list of terms used in biological and medical research. Source: public domain CRISP Thesaurus maintained by the Office of Extramural Research at the National Institutes of Health [1].

P

p aminobenzoate -- p aminohippurate -- p aminosalicylate -- p chlorophenylalanine -- P glycoprotein -- P selectin -- P0 protein (myelin) -- p107 protein -- p150,95 -- P2 protein (myelin) -- p21 -- p27 -- P3 wave (evoked potential) -- P32 isotope -- p34 (cdc2) -- p53 gene -- p53 protein -- p60 (cyclin A) -- P62 (cyclin B) -- p65 -- PABA -- PACAP -- Pacific Islander -- Pacific Islands -- Pacific yew tree -- Pacinia loeffleri -- packaging material -- paclitaxel -- pactamycin -- PADGEM -- PAF -- PAF acetylhydrolase -- Paget's disease (mammary) -- Paget's disease of bone -- Paget's disease of breast -- PAH -- PAH (polynuclear aromatic hydrocarbon) -- PAI -- pain -- pain management -- pain receptor -- pain relieving agent (centrally acting) -- pain threshold -- pain tolerance -- painful functional bowel disorder -- paired helical filament -- paired stimuli -- PALA -- palate -- paleontology -- palladium -- pallidum -- Palmae -- palmitate -- palmitoylation -- palmprint -- Palyam virus -- pamidronate -- Pan -- Panama -- Panamanian -- pancreas -- pancreas alpha cell -- pancreas beta cell -- pancreas delta cell -- pancreas disorder -- pancreas enzyme -- pancreas hormone -- pancreas imaging -- pancreas neoplasm -- pancreas transplantation -- pancreas visualization -- pancreatectomy -- pancreatic alpha cell -- pancreatic amylin -- pancreatic beta cell -- pancreatic cancer -- pancreatic delta cell -- pancreatic DNase -- pancreatic duct -- pancreatic elastase -- pancreatic elastase I -- pancreatic elastase II -- pancreatic islet -- pancreatic islet disorder -- pancreatic islet function -- pancreatic islet hyperplasia -- pancreatic islet neoplasm -- pancreatic islet transplantation -- pancreatic juice -- pancreatic neoplasm -- pancreatic polypeptide -- pancreatic ribonuclease -- pancreatic RNase -- pancreatitis -- pancreatoduodenectomy -- pancreatopeptidase E -- pancreozymin -- pancuronium -- panic anxiety syndrome -- panic disorder -- panic disorder with agoraphobia -- panmural cystitis -- panmural fibrosis of the bladder -- Panstrongylus -- pantoprazole -- pantothenate -- pap smear -- papain -- Papanicolaou smear -- papaverine -- paper chromatography -- paper electrophoresis -- papilla -- papillary muscle -- papilledema -- papillitis -- Papillomavirus -- Papillomavirus sylvilagi -- Papillon Lefevre syndrome -- Papio -- Papovaviridae -- Papovavirus -- Papua New Guinea -- para aminobenzoic acid -- paraaortic body -- parabiosis -- parabrachial nucleus -- paracoccidiodomycosis -- paracoccidioidal mycosis -- Paracoccidioides brasiliensis -- paracoccidioidomycosis -- Paracolobactrum -- paracrine -- paradoxical sleep -- paraganglia -- parageusia -- parahippocampal gyrus -- parainfluenza virus -- parainfluenza virus type 1 -- parainfluenza virus type 2 -- parainfluenza virus type 3 -- parainfluenza virus type 4 -- paralinguistic behavior -- parallel architecture (computer) -- parallel computing -- parallel processing -- paralysis -- paralysis agitans -- Paramecium -- paramedic -- paramedical education -- paramyosin -- Paramyxoviridae -- Paramyxoviridae disease -- Paramyxovirinae -- Paramyxovirus -- paramyxovirus vaccine -- paranasal sinus -- paranoia -- paranoid psychosis -- paranoid schizophrenia -- parapepsin I -- paraphrenia -- paraplegia -- Parapoxvirus -- paraproteinemia -- parapsychology -- paraquat -- parasite -- parasite carcinogen -- parasite infection mechanism -- parasite registry -- parasite resource -- parasitic disease -- parasitic disease chemotherapy -- parasitic disease diagnosis -- parasitic disease pharmacotherapy -- parasitic eye infection -- parasitic gastrointestinal disorder -- parasitic liver disorder -- parasitic skin disorder -- parasiticide -- parasitism -- parasympathetic nervous system -- parasympatholytic agent -- parasympathomimetic agent -- paraterminal body -- parathion -- parathormone -- parathyroid disorder -- parathyroid gland -- parathyroid hormone -- parathyroid hormone related protein -- parathyroid hyperplasia -- parathyroid neoplasm -- parathyroid transplantation -- parathyroidectomy -- paratrachoma -- paravaccinia virus -- paraventricular nucleus -- parent -- parent child interaction -- parent deprivation -- parent offspring interaction -- parental age -- parenteral feeding -- pargyline -- parietal cortex -- parietal lobe -- parity -- parkin protein -- Parkinson's disease -- parolfactory area -- parosmia -- parotid gland -- paroxetine -- paroxysmal nocturnal hemoglobinuria -- paroxysmal sleep -- PARS -- pars compacta -- PARS inhibitor -- pars intermedia -- pars planitis -- parsnip yellow fleck virus -- parthenogenesis -- partial seizure -- particle -- particle accelerator -- particle beam -- particle chamber -- particle counter -- partition chromatography -- Partitiviridae -- parturition -- parvalbumin -- Parvoviridae -- Parvovirus -- Parvovirus B19 -- parvovirus group -- passive immunization -- passive sensitization -- passive smoking -- passive transport -- Pasteurella -- Pasteurella multocida -- Pasteurella tularensis -- Pasteurellaceae -- pasteurellosis -- pasteurization -- patch clamp -- patella -- patent ductus arteriosus -- paternal behavior -- paternity testing -- pathogenic diet -- pathologic arteriovenous shunt -- pathologic autolysis -- pathologic bone resorption -- pathologic calcification -- pathologic decalcification -- pathologic keratinization -- pathologic ossification -- pathologic process -- pathology -- pathophysiology -- patient care -- patient care management -- patient care personnel attitude -- patient care personnel relations -- patient care planning -- patient care team -- patient confidentiality -- patient education -- patient monitoring device -- patient oriented research -- patient privacy -- patient professional relations -- patient recruitment -- patient registry -- patient safety -- patient safety /medical error -- pattern perception -- Pavlovian conditioning -- paxil -- paxillin -- PBI (protein bound iodine) -- PBL (peripheral blood lymphocyte) -- PBMC (peripheral blood mononuclear cell) -- PC1 -- PC12 cell -- PC2 -- PC3 -- PCB -- PCBs -- PCD -- PCNA -- PCOS -- PCP -- PCP receptor -- PCPA -- PCR -- PCR DNA fingerprinting -- PCT -- PDE -- PDGF -- PDI -- PDQ (Physician Data Query) -- PDZ protein -- pea -- pea enation mosaic virus -- pea family -- peace -- peak expiratory flow rate -- peak flow measurement -- peanut -- pectin -- pediatric AIDS -- pediatric cancer -- pediatric neoplasm -- pediatric nursing -- pediatric nutrition -- pediatric pharmacology -- pediatrician -- pediatrics -- pedigree -- pedunculopontine tegmentum -- peer group -- PEG -- Pelecypoda -- Pelizaeus Merzbacher brain sclerosis -- Pelizaeus Merzbacher disease -- pellicle -- pelvic bone -- pelvic cancer -- pelvic floor -- pelvic inflammatory disease -- pelvic neoplasm -- pelvirectal achalasia -- pelvis -- pelvis cancer -- pelvis neoplasm -- pemoline -- pemphigoid -- pemphigus -- penicillamine -- penicillin -- penicillin G -- penicillinase -- Penicillium -- penis -- penis disorder -- penis erection -- penis surgery -- pentamidine -- pentazocine -- pentobarbital -- pentosan -- pentose -- pentose phosphate -- pentose phosphate shunt -- pentostatin -- pentosyltransferase -- pentoxifylline -- pentylenetetrazole -- PEP -- PEPCK -- PEPCK (phosphoenolpyruvate carboxykinase) -- pepsin -- pepsin inhibitor -- pepsinogen -- peptic esophagitis -- peptic ulcer -- peptidase -- peptide -- peptide analog -- peptide chemical synthesis -- peptide hormone -- peptide hormone analog -- peptide hormone biosynthesis -- peptide hormone metabolism -- peptide hydrolase -- peptide library -- peptide nucleic acid -- peptide sequence -- peptide structure -- peptide synthase -- peptide T -- peptide vaccine -- peptidoglycan -- peptidyl dipeptidase -- peptidyl dipeptidase A -- peptidylprolyl isomerase -- Peptococcaceae -- perception -- perception disorder -- perceptual closure -- perceptual distortion -- perceptual masking -- percolan -- percutaneous transhepatic cholangiography -- perfluorocarbon -- perfluorochemical emulsion -- perforant pathway -- perforin -- performance -- performing art -- perfusion -- perfusion (blood) -- pergolide -- periaqueductal gray matter -- periarteritis nodosa -- periarthritis -- pericardiotomy -- pericarditis -- pericardium -- pericyte -- perilymph -- perimenopause -- perimenstrual -- perimetry -- perinatal -- perinatal blood group incompatibility -- perinatal distress syndrome -- perinatal HLA incompatibility -- perinatal leukocyte incompatibility -- perineurium -- periodic acid -- periodic hypokalemic paralysis -- periodontal disease -- periodontitis -- periodontium -- periodontium disorder -- periosteum -- periostitis hyperplastica -- peripheral blood vessel -- peripheral blood vessel disorder -- peripheral nervous system -- peripheral nervous system disorder -- peripheral neuropathy -- peripherin -- periplasm -- periplasmic -- Perissodactyla -- peristalsis -- peritoneal cancer -- peritoneal cavity -- peritoneal dropsy -- peritoneal exudate -- peritoneal fluid -- peritoneal neoplasm -- peritoneum -- peritoneum neoplasm -- peritonitis -- periwinkle alkaloid -- perlecan -- permanent cell line -- permease -- pernicious anemia -- Peromyscus -- peroneal muscular atrophy -- peroxidase -- peroxidase labeled antibody -- peroxidation -- peroxide -- peroxisome -- peroxisome proliferator activated receptor -- peroxynitrite -- persistent pulmonary hypertension of the newborn -- person with disability -- personal computer -- personal diary -- personal log -- personal satisfaction -- personality -- personality disorder -- personality test -- personnel -- perspiration -- persuasion -- PERT -- pertussis -- pertussis toxin -- pertussis vaccine -- Peru -- pest control -- pesticide -- pesticide biological effect -- pesticide interaction -- pesticide residue -- pesticide resistance -- Pestivirus -- pet -- petit mal seizure -- petrolatum -- petroleum ether -- petroleum oil -- PETT -- Peutz Jeghers syndrome -- Peyer's patches -- PF4 -- PFGE -- Pfiesteria -- PGE -- PGF -- PGK deficiency -- PGS -- PGS2 -- pH -- PHA -- Phaeophyta -- phage -- phagocyte -- phagocytic dysfunction -- phagocytosis -- phagosome -- Phanerochaete chryosporium -- phantom model -- pharmacist -- pharmacodynamics -- pharmacogenetics -- pharmacokinetics -- pharmacology -- pharmacophore -- pharmacotherapy -- pharmacy -- pharmacy administration -- pharyngeal pouch syndrome -- pharyngeal tonsil -- pharyngitis -- pharynx -- pharynx neoplasm -- phase change -- phase contrast microscopy -- phase I trial -- phase II trial -- phase III trial -- phase IV trial -- Phaseolus -- phenacetin -- phenanthrene -- phenanthridine -- phenanthroline -- phenazine -- phencyclidine -- phenelzine -- phenmetrazine -- phenobarbital -- phenol -- phenolase -- phenolate -- phenolic amine -- phenone -- phenothiazine -- phenotype -- phenoxyacetate -- phenoxybenzamine -- phentermine -- phentolamine -- phenylacetate -- phenylalaninase -- phenylalanine -- phenylalanine 4 hydroxylase -- phenylalanine 4 monooxygenase -- phenylalanine analog -- phenylalanine nitrogen mustard -- phenylalaninemia -- phenylalkane -- phenylalkanol -- phenylalkoxyalkylamine -- phenylalkylamine -- phenylamide -- phenylamine -- phenylbutazone -- phenylbutyrate -- phenylcarboxylate -- phenylenediamine -- phenylephrine -- phenylethanol -- phenylethylamine -- phenylhydrazine -- phenylketonuria -- phenylmethylamine -- phenylpyruvic oligophrenia -- phenylsulfonamide -- phenytoin -- pheochromocytoma -- pheochromocytoma 12 cell line -- pheromone -- pheromone detector -- PHF -- Phialophora -- Philadelphia chromosome -- Philippine macaque -- Philippines -- phlebitis -- Phlebotomus -- phlebotomy -- Phlebovirus -- phloretin -- phlorhizin -- phobia -- phocine distemper virus -- phonetics -- phonoarthrography -- phonocardiography -- phonology -- phorbol -- phorbol ester -- Phormia -- phosphamide -- phosphatase -- phosphatase inhibitor -- phosphate -- phosphate absorption inhibitor -- phosphate diabetes -- phosphate ester -- phosphatidase -- phosphatidate -- phosphatidate phosphatase -- phosphatide -- phosphatidolipase -- phosphatidylcholine -- phosphatidylcholine 2 acylhydrolase -- phosphatidylcholine cholinephosphohydrolase -- phosphatidylcholine phosphatidohydrolase -- phosphatidylcholine sterol acyltransferase -- phosphatidylethanolamine -- phosphatidylglycerol -- phosphatidylinositol -- phosphatidylinositol 3 kinase -- phosphatidylserine -- phosphine -- phosphite -- phosphite ester -- phosphodiester -- phosphodiesterase -- phosphodiesterase I -- phosphodiesterase II -- phosphodiesterase inhibitor -- phosphoenol transphosphorylase -- phosphoenolpyruvate -- phosphoenolpyruvate carboxykinase -- phosphoenolpyruvate carboxylase -- phosphoenolpyruvate kinase -- phosphoester ligase -- phosphofructokinase 1 -- phosphofructokinase myopathy -- phosphoglucoisomerase -- phosphoglucomutase -- phosphogluconate dehydrogenase -- phosphogluconate oxidative pathway -- phosphoglycerate -- phosphoglycerate dehydratase -- phosphoglycerate hydro lyase -- phosphoglycerate kinase -- phosphoglycerate kinase deficiency -- phosphoglycerate mutase -- phosphoglycerate phosphomutase -- phosphoglyceride -- phosphoglyceromutase -- phosphohexisomerase -- phosphohexoisomerase -- phosphohexokinase -- phosphohexomutase -- phosphohexose isomerase -- phosphoinositide -- phospholamban -- phospholipase A -- phospholipase A2 -- phospholipase B -- phospholipase C -- phospholipase D -- phospholipase inhibitor -- phospholipid -- phospholipid cholesterol acyltransferase -- phospholipid inhibitor -- phosphomannose isomerase -- phosphomonoester -- phosphomonoesterase -- phosphomutase -- phosphonate -- phosphonium compound -- phosphonous acid -- phosphonylmethoxypropyl adenine -- phosphopeptide -- phosphoprotein -- phosphoprotein phosphatase -- phosphoprotein phosphohydrolase -- phosphoprotein pp90 -- phosphopyruvate hydratase -- phosphorescence -- phosphoribosylamine -- phosphoribosyldiphosphate 5 amidotransferase -- phosphoric acid -- phosphoric anhydride -- phosphoric diester hydrolase -- phosphoric ester -- phosphoric monoester hydrolase -- phosphorothioate -- phosphorous acid -- phosphorous ester -- phosphorus -- phosphorus acid -- phosphorus compound -- phosphorus heterocyclic compound -- phosphorus metabolism -- phosphorus metabolism disorder -- phosphorus mustard -- phosphorus nitrogen hydrolase -- phosphorus oxygen lyase -- phosphorylase -- phosphorylase b kinase kinase -- phosphorylase kinase -- phosphorylase kinase kinase -- phosphorylase phosphatase -- phosphorylation -- phosphorylcholine -- phosphosaccharomutase -- phosphoserine -- phosphotransferase -- phosphotriose isomerase -- phosphotyrosine phosphatase -- phosvitin -- Photinus luciferin 4 monooxygenase -- photoactivation -- photoallergy -- Photobacterium -- photobiology -- photochemistry -- photocoagulation eye surgery -- photocoagulation therapy -- photoconduction -- photodynamic therapy -- photoelectric plethysmography -- photoelectron microscopy -- photoelectron spectrometry -- photographic memory -- photography -- photolysis -- photomicrography -- photomultiplier -- photon -- photon absorptiometry -- photonics -- photoperiod -- photoperiodicity -- photopheresis -- photoprotection -- photoprotective agent -- photosensitizing agent -- photostimulus -- photosynthesis -- photosynthetic bacteria -- photosynthetic reaction center -- photosystem -- photosystem I -- photosystem II -- phototherapy -- phototoxicology -- phrenic nerve -- phthalate -- phthalimide -- phthalocyanin -- phycobilin -- phycocyanin -- Phycodnaviridae -- phycoerythrin -- phylloquine reductase -- phylloquinone -- phylogeny -- Physalia -- Physarum -- physiatry -- physical chemical interaction -- physical fitness -- physical insult -- physical mapping -- physical model -- physical process -- physical property -- physical sample collection -- physical science -- physical separation -- physical state -- physical therapy -- physician -- physics -- physiologic anastomosis -- physiologic bone resorption -- physiologic ossification -- physiologic stressor -- physiological psychology -- physiology -- physiopsychology -- physostigmine -- phytanic acidemia -- phytate -- phytoestrogen -- phytohemagglutinin -- phytohormone -- phytonadione -- phytophotodermatitis -- phytoplankton -- Phytoreovirus -- phytosphingosine -- phytotoxicosis -- phytotoxin -- pi bond -- PI3k -- pia mater -- pica -- Pichinde -- Pick's disease -- Picodnavirus -- Picornaviridae -- Picornavirus -- picrotoxin -- PID -- pig -- pig cytomegalovirus -- pig gelantinase -- pigeon -- pigeon breeder's lung -- pigeonpox virus -- pigment -- pigmentation -- pigmentation agent -- pigmentation disorder -- pigmented nevus -- pigtail macaque -- pika -- pilin -- pill (pharmacologic) -- pillbug -- pilocarpine -- pilus -- pimagedine -- pimozide -- pinacidil -- pineal body -- pineal body neoplasm -- pinealoma -- pink bread mold -- pinna -- Pinnipedia -- pinocytosis -- Pinta -- pion radiation -- pion therapy -- PIP (phosphatidylinositol phosphate) -- piperazine -- piperidinamide -- piperidine -- piperidinedione -- pirenzepine -- piriform cortex -- piritrexim -- piroplasmosis -- piroxicam -- Piry virus -- Pisum -- pitch -- pitressin -- Pittsburgh pneumonia -- pituitary adenylate cyclase activating peptide -- pituitary adrenal axis -- pituitary basophilism -- pituitary cancer -- pituitary circulation -- pituitary diabetes insipidus -- pituitary disorder -- pituitary disorder diagnosis -- pituitary dwarfism -- pituitary gland -- pituitary gonadal axis -- pituitary hormone -- pituitary neoplasm -- pituitary stalk section -- pituitary thyroid axis -- pituitary transplantation -- pituitary tryptase -- pituitectomy -- pityriasis rubra -- Pixuna virus -- PKA -- PKC -- PKG -- PKR -- PKS enzyme -- PKU -- placebo -- placebo controlled study -- placebo effect -- placenta -- placenta disorder -- placenta neoplasm -- placental anticoagulant protein -- placental cancer -- placental hormone -- placental lactogen -- placental mammal -- placental neoplasm -- placental transfer -- plague -- plakoglobin -- Planaria -- Planarians -- plankton -- plant -- plant autotrophy -- plant contact dermatitis -- plant development -- plant disease -- plant ecology -- plant extract -- plant fungi -- plant gall -- plant genetics -- plant growth -- plant growth regulator -- plant hormone -- plant insecticide -- plant morphology -- plant neoplasm -- plant physiology -- plant poison -- plant poisoning -- plant population genetics -- plant protein -- plant rhabdovirus group -- plant virus -- Plantar wart -- plaque -- plaque assay -- plaque microorganism -- plasma -- plasma cell -- plasma cell leukemia -- plasma cell myeloma -- plasma cell neoplasm -- plasma membrane -- plasma protein -- plasma substitute -- plasmacyte -- plasmacytic leukemia -- plasmalemma -- plasmalemmal vesicle -- plasmalogen -- plasmapheresis -- Plasmaviridae -- plasmid -- plasmid vaccine -- plasmin -- plasmin inhibitor -- plasminogen -- plasminogen activator -- plasminogen activator inhibitor -- plasmocyte -- Plasmodium -- Plasmodium berghei -- Plasmodium falciparum -- Plasmodium gallinaceum -- Plasmodium knowlesi -- plastic -- plastic surgery -- plastid -- plastocyanin -- plastoquinone -- platelet -- platelet activating factor -- platelet activation -- platelet aggregation -- platelet aggregation inhibitor -- platelet cofactor I -- platelet derived growth factor -- platelet disorder -- platelet factor 4 -- platelet factor III -- platelet factor IV -- platelet preservation -- platelet transfusion -- platelet typing -- plateletpheresis -- platidiam -- platinol -- platinum -- platinum diamminodichloride -- platinum electrode -- Platyhelminthes -- Platyhelminths -- platyrhine monkey -- play -- play therapy -- pleasure -- pleiotropism -- pleomorphic lymphosarcoma -- Plesiomonas -- plethysmography -- pleural cavity -- pleural cavity effusion -- pleural neoplasm -- pleurisy -- pleuropneumonialike organism -- plicamycin -- PLP (proteolipid protein of myelin) -- pluripotent stem cell -- plutonium -- PMA (phorbol myristate acetate) -- PMDD -- PML -- PMS -- PNA -- pneumococcal vaccine -- Pneumococcus -- pneumoconiosis -- Pneumocystis -- Pneumocystis carinii -- Pneumocystis carinii pneumonia -- Pneumocystis pneumonia -- pneumocyte -- pneumoencephalography -- pneumography -- pneumonectomy -- pneumonia -- pneumonia virus of mice -- pneumonic plague -- pneumonitis -- pneumoradiography -- pneumothorax disorder -- Pneumovirinae -- Pneumovirus -- Pneumovirus vaccine -- PNH -- PNS -- podocyte -- podophyllin -- Podoviridae -- poikilothermy -- point mutation -- poison -- poison control -- poison ivy dermatitis -- poisoning -- pokeweed mitogen -- pol gene product (retrovirus) -- Poland -- polarimetry -- polarized cell -- polarized light -- polarography -- police -- polio -- poliomyelitis -- poliomyelitis vaccine -- poliomyelitis virus -- poliovirus -- politics -- pollen -- pollenosis -- pollutant -- pollutant flux -- pollutant interaction -- pollutant transport -- pollution -- pollution related respiratory disorder -- poloxalene -- poly A -- poly ADP polymerase -- poly ADP ribose synthetase -- poly count -- poly IC -- polyacrylamide -- polyacrylate -- polyadenosine diphosphate ribose polymerase -- polyadenylate -- polyamine -- Polyangiaceae -- Polyangium -- polyanion -- polyarteritis nodosa -- polyarthritis -- polycation -- polychlorinated biphenyl -- polychlorobiphenyl -- polychlorodibenzofuran -- polyclonal antibody -- polycystic kidney -- polycystic ovary -- polycystic ovary disease -- polycystic ovary disorder -- polycystic ovary syndrome -- polycythemia -- polycythemia vera -- polydipsia -- Polydnaviridae -- polydrug abuse -- polyene -- polyethylene -- polyethylene glycol -- polyglutamate -- polyglutamine -- polygraphy -- polyhalobiphenyl -- polyhalotriphenyl -- polyhedral virus -- polyhydroxy compound -- polyion -- polyketide synthase -- polylysine -- polymer -- polymerase chain reaction -- polymerization -- polymethacrylate -- polymorphic photodermatitis -- polymorphonuclear leukocyte -- polymorphonuclear leukocyte elastase -- polymyositis -- polymyxin B -- Polynesian -- polyneuritis -- polynuclear aromatic hydrocarbon -- polynucleotide -- polynucleotide ligase -- polynucleotide phosphorylase -- polynucleotide vaccine -- polyol dehydrogenase -- polyoma virus -- Polyomavirus -- Polyomavirus bovis -- Polyomavirus cercopitheci -- Polyomavirus hominis 2 -- Polyomavirus maccacae 1 -- Polyomavirus muris 1 -- Polyomavirus muris 2 -- Polyomavirus papionis 1 -- Polyomavirus papionis 2 -- Polyomavirus sylvilagi -- polyp -- polypeptide -- polyphagia -- polyphenol -- polyphosphate -- polyphosphorylase -- polyploidy -- polypoid adenoma -- polyposis -- polypropylene -- polyribonucleotide nucleotidyltransferase -- polyribosome -- polysaccharide -- polysaccharide carbon oxygen lyase -- polysome -- polysomnography -- polystyrene -- polysubstance abuse -- polytyrosine -- polyurethane -- polyvinyl -- polyvinylchloride -- polyvinylpyrrolidone -- POMC -- Pompe's disease -- pompholyx -- Pongidae -- Pongine herpesvirus 1 -- Pongo -- pons -- ponticulin -- population explosion -- population genetics -- population size -- population survey -- porcelain -- porcine -- porcine epidemic diarrhea virus -- porcine hemagglutinating encephalomyelitis virus -- porcine influenza -- porcine parvovirus -- porcine stress syndrome -- porcine transmissible gastroenteritis virus -- porcine type C virus -- pore forming protein -- porfiromycin -- porgy -- Porifera -- porin -- pork tapeworm -- porous hydrogel -- porphin -- porphobilinogen -- porphobilinogen synthase -- porphyria -- porphyria cutanea tarda -- porphyria intermittent acute -- porphyrin -- porphyrin biosynthesis -- porphyrin metabolism -- porphyrin structure -- Porphyromonas -- Porphyromonas gingivalis -- porphyroprotein -- porpoise -- portability -- portable biomedical equipment -- portal -- portal hypertension -- portal vein -- Portuguese man of war -- positive pressure breathing -- positron camera -- positron emission tomography -- postcoital contraceptive -- postdoctoral investigator -- posterior column -- posterior lobe of pituitary -- posterior pituitary -- postganglionic fiber -- postgastrectomy syndrome -- postgraduate education -- postgraduate nursing education -- posthemiplegic chorea -- postherpetic neuralgia -- posthospitalization care -- postinfectious polyneuritis -- postmenopausal bone loss -- postmenopause -- postmortem -- postnatal asphyxia -- postnatal care -- postnatal depression -- postnatal growth disorder -- postnatal human -- postnatal hypoprothrombinemia -- postoperative complication -- postoperative state -- postpartum -- postpartum depression -- postperfusion syndrome -- postpericardiotomy syndrome -- postpolio syndrome -- posttranscriptional RNA processing -- posttransfusion hepatitis -- posttranslational modification -- posttraumatic respiratory insufficiency -- posttraumatic stress disorder -- postural hypotension -- posture -- potassium -- potassium channel -- potassium channel blocker -- potassium chloride -- potassium deficiency -- potassium ion -- potentiometric titration -- potentiometry -- Potexvirus -- potocytosis -- potto -- Potyvirus -- Pou protein -- poultry product -- pox virus -- Poxviridae -- Poxviridae disease -- poxvirus -- poxvirus variolae -- PPAR -- ppd (purified protein derivative of tuberculin) -- PPLO -- pPTB (polypyrimidine tract binding protein) -- practolol -- Prader Willi syndrome -- prairie dog -- pralidoxime -- Pramlintide -- pravachol -- pravastatin -- prayer therapy -- prazosin -- pRB -- pre mRNA -- preadmission counseling -- preadmission patient care -- preadolescence -- prebiotic evolution -- precancerous state -- precedence effect -- precipitation -- precipitin -- precocious puberty -- precommissural setum -- precursor cell -- precursor mRNA -- predation -- predatory behavior -- prediabetic state -- prednisolone -- prednisone -- predoctoral investigator -- preeclampsia -- preexcitation syndrome -- preference -- prefrontal cortex -- prefrontal lobe -- pregabalin -- preganglionic fiber -- pregnancy -- pregnancy circulation -- pregnancy circulation disorder -- pregnancy diabetes -- pregnancy disorder -- pregnancy disorder chemotherapy -- pregnancy disorder pharmacotherapy -- pregnancy hypertension -- pregnancy immunology -- pregnancy infection -- pregnancy loss -- pregnancy nutrition -- pregnancy test -- pregnancy toxemia -- pregnane compound -- pregnanediol -- pregnanolone -- pregnenolone -- prejudice -- preleukemic anemia -- Premarin -- premature aging -- premature infant animal -- premature infant human -- premature labor -- premature ovarian failure -- premature retinopathy -- premature ventricular contraction -- premedical education -- premenopause -- premenstrual dysphoric disorder -- premenstrual syndrome -- premenstrual tension -- premolar -- premRNA -- prenatal care -- prenatal diagnosis -- prenatal disorder -- prenatal experience -- prenatal growth disorder -- prenatal influence -- prenatal nutrition -- prenatal stress -- prenatal therapy -- prenatal transplantation -- preneoplastic state -- prenyl -- prenylation -- preoperative counseling -- preoperative state -- preoptic area -- preoptic nucleus -- preoptic periventricular nucleus -- preoptic region -- preparation (biological) -- prephenate -- preprohormone -- presbycusis -- presbytis -- preschool child (1-5) -- presenile dementia -- presenilin -- preservation -- presqualene diphosphate synthase -- pressoreceptor -- pressure sore -- pretazzetine -- pretectal region -- preterm baby -- preterm infant animal -- preterm infant human -- prevalence -- prevention -- prevention evaluation -- preventive dentistry -- preventive medicine -- prickle cell carcinoma -- Prilosec -- primaquine -- primary amebic meningoencephalitis -- primary amenorrhea -- primary aminoacid -- primary biliary cirrhosis -- primary care -- primary care physician -- primary degenerative dementia -- primary hyperaldosteronism -- primary hyperoxaluria -- primary hypertension -- primary lateral sclerosis -- primary pulmonary hypertension -- primary sclerosing cholangitis -- primary thrombocythemia -- Primate -- primemycin -- primidone -- primipara -- primitive cell -- primitive medicine -- primitive society -- Prinivil -- Prinixil -- printing -- Prinzmetal's angina -- prion -- prion induced disorder -- prismatic spectacles -- prison -- privacy of information -- proband -- probenecid -- probiotic -- problem solving -- Proboscidea -- probucol -- procainamide -- procaine -- procarbazine -- Procardia -- procedure -- prochlorperazine -- procollagen -- procollagenase activator -- proconvertin -- proctoscopy -- Procyonidae -- prodrug -- proelastase -- proenzyme -- professional organization -- professor -- profibrinolysin -- profilin -- progenitor cell -- progeria -- progesterone -- progesterone analog -- progesterone receptor -- progesterone reductase -- progestin -- prognosis -- programmed cell death -- programmed instruction -- programming language -- progressive bulbar palsy -- progressive care -- progressive chorea -- progressive familial myoclonic epilepsy -- progressive multifocal leukoencephalopathy -- progressive muscular atrophy -- progressive myositis ossificans -- progressive neural muscular atrophy -- progressive ossifying myositis -- progressive spinal muscular atrophy -- progressive supranuclear palsy -- progressive systemic sclerosis -- prohormone -- prohormone convertase -- proinsulin -- prokaryote -- prokaryotic kingdom -- prolactin -- prolactin inhibiting factor -- prolactin releasing /inhibiting factor -- prolactin releasing factor -- prolactinoma -- Prolastin -- proliferating cell nuclear antigen -- proliferative vitreoretinopathy -- proline -- proline carboxypeptidase -- proline NADP oxidoreductase -- prolonged pregnancy -- promazine -- promethazine -- promyelocytic leukemia -- pronase -- proopiomelanocortin -- propane -- propanediol -- propanol -- propanolol -- propellant -- properdin -- prophage -- prophase -- propionate -- Propionibacteriaceae -- Propionibacterium -- propionic acidemia -- propionyl coA carboxylase -- propionyl coA carboxylase deficiency -- propoxyphene -- propranolol -- proprioception -- proptosis -- propyl alcohol -- propylene glycol -- Proscar -- prosencephalon -- Prosimii -- Prospect Hill virus -- prostacyclin -- prostaglandin -- prostaglandin analog -- prostaglandin E -- prostaglandin endoperoxide synthase -- prostaglandin F -- prostaglandin G H synthase -- prostaglandin hypertension -- prostaglandin inhibitor -- prostaglandin receptor -- prostaglandin synthase -- prostaglandin X -- prostate -- prostate cancer -- prostate disorder -- prostate enlargement -- prostate hyperplasia -- prostate neoplasm -- prostate preneoplastic state -- prostate specific antigen -- prostate stem cell antigen -- prostate surgery -- prostatic cancer -- prostatic neoplasm -- prostatitis -- prosthesis -- prosthetic heart valve -- prosthetic membrane -- prosthodontics -- prostitute -- prostitution -- prostration -- protamine -- protease -- protease inhibitor -- proteasome -- protective chemical group -- protegrins -- protein -- protein 4.1 -- protein activation -- protein binding -- protein biosynthesis -- protein blotting -- protein bound carbohydrate -- protein bound insulin -- protein C -- protein chemical synthesis -- protein covalently bound to lipid (nonblood) -- protein database -- protein deficiency -- protein degradation -- protein denaturation -- protein detection -- protein distribution -- protein disulfide isomerase -- protein disulfide reductase (glutathione) -- protein engineering -- protein expression -- protein folding -- protein function -- protein glutamine gamma glutamyltransferase -- protein isoform -- protein kinase -- protein kinase A -- protein kinase C -- protein kinase G -- protein kinase II -- protein kinase inhibitor -- protein kinase R -- protein localization -- protein metabolism -- protein metabolism disorder -- protein phosphatase -- protein protein interaction -- protein purification -- protein quantitation -- protein reconstitution -- protein S -- protein sequence -- protein sequencing -- protein signal sequence -- protein structure -- protein structure function -- protein subunit -- protein synthesis -- protein transport -- protein tyrosine kinase -- protein tyrosine phosphatase -- protein tyrosine phosphate phosphohydrolase -- proteinase -- proteinuria -- proteoglycan -- proteoglycanase -- proteolipid -- proteolysis -- proteolytic enzyme -- proteomics -- Proteus -- Proteus infection -- prothrombase -- prothrombin -- prothrombin activator -- prothrombin time -- prothrombinase -- Protista -- protochordate -- protocol -- protocol development -- proton -- proton beam -- protonation -- protooncogene -- protoplasm -- protoplasm motility -- protoplast -- protoplastic membrane -- protoporphyria -- protoveratrine -- protozoa -- protozoa antigenic variation -- protozoa disease chemotherapy -- protozoa disease pharmacotherapy -- protozoal antigen -- protozoal antigen variation -- protozoal antigenic variation -- protozoal cyst -- protozoal disease chemotherapy -- protozoal disease pharmacotherapy -- protozoal genetics -- protozoal infection -- protozoal meningoencephalitis -- protozoal toxin -- protozoal vaccine -- protozoan infection -- protriptyline -- Protropin -- protruded disk -- Proventil -- Provera -- provirus -- Prowazekia -- Prower factor -- Prozac -- prozone phenomenon -- PRS (pyrogen releasing substance) -- PRT -- pruritis -- PSA -- pseudarthrosis -- pseudobulbar palsy -- pseudobulbar paralysis -- pseudocholinesterase -- pseudocowpox virus -- pseudocoxalgia -- pseudogene -- pseudogout -- pseudohermaphroditism -- pseudohypoparathyroidism -- pseudointima -- pseudomembranous colitis -- Pseudomonadaceae -- Pseudomonas -- Pseudomonas aeruginosa -- Pseudomonas maltophilia -- pseudopregnancy -- pseudorabies virus -- pseudouridine -- pseudoxanthoma elasticum -- PSG -- psilocybin -- psittacinepox virus -- psittacosis -- psoralen -- psoriasis -- psoriatic arthritis -- psoriazin -- PSS (progressive systemic sclerosis) -- psychasthenia -- psychedelic drug -- psychiatric insurance -- psychiatric nursing -- psychiatric patient care -- psychiatric social service -- psychiatric social work -- psychiatric surgery -- psychiatric ward -- psychiatrist -- psychiatry -- psychic activity level -- psychoacoustics -- psychoanalysis -- psychoanalytic interpretation -- psychoanalytic theory -- psychobiology -- Psychodidae -- psychodrama -- psychodynamic therapy -- psychogenetics -- psychogenic amnesia -- psychogenic fugue -- psychoimmunology -- psycholinguistics -- psychological adaptation -- psychological adjustment -- psychological aspect of aging -- psychological aspect of cancer -- psychological concentration -- psychological defense mechanism -- psychological disorder -- psychological identification -- psychological model -- psychological reinforcement -- psychological shock -- psychological stressor -- psychological test -- psychological values -- psychologist -- psychology -- psychometrics -- psychomotor disorder -- psychomotor epilepsy -- psychomotor function -- psychomotor reaction time -- psychomotor tracking -- psychoneuroimmunology -- psychopathic personality -- psychopathology -- psychopharmacologic agent -- psychopharmacology -- psychophysics -- psychophysiologic disorder -- psychophysiology -- psychosexual development -- psychosine hydrolase -- psychosis -- psychosocial deprivation -- psychosocial isolation -- psychosocial rehabilitation -- psychosocial separation -- psychosocial service -- psychosocial variables -- psychosomatic disorder -- psychostimulant -- psychosurgery -- psychotherapy -- psychotic depression -- psychotomimetic drug -- psychotropic drug -- PTCA -- PTCA (percutaneous transluminal coronary angioplasty) -- pteridine -- pteridine analog -- Pteridium -- pterin -- PTFE -- PTFE (polytetrafluoroethylene) -- PTH -- PTHrP -- Ptilocerus -- PTK -- ptosis epicanthus syndrome -- PTSD -- public assistance -- public health -- public health nursing -- public opinion -- publication -- puerperal disorder -- puerperal fever -- puerperal infection -- Puerto Rican -- Puerto Rico -- PUFA -- PUFA (polyunsaturated fatty acid) -- puffer fish toxin -- pulmonary -- pulmonary alveolar proteinosis -- pulmonary artery -- pulmonary body -- pulmonary circulation -- pulmonary circulation disorder -- pulmonary circulation obstruction -- pulmonary diffusion -- pulmonary edema -- pulmonary embolism -- pulmonary fibrosis -- pulmonary function -- pulmonary granuloma -- pulmonary heart disease -- pulmonary hypertension -- pulmonary hypoxia -- pulmonary immaturity of newborn -- pulmonary infarction -- pulmonary respiration -- pulmonary respirator -- pulmonary stretch receptor -- pulmonary surfactant -- pulmonary valve stenosis -- pulmonary vascular disorder -- pulmonary vein -- pulmonary ventilation -- pulmonary ventilator -- pulp -- pulp calcification -- pulp canal (anatomy) -- pulp capping -- pulp disorder -- pulp obturation -- pulpotomy -- pulse pressure wave -- pulse radiolysis -- pulsed field gel electrophoresis -- pulvinar thalami -- pump (molecular) -- punishment -- pupil -- pupillary constrictor -- pupillary dilator -- pupillary reflex -- pupillography -- puppet children -- puppetlike syndrome -- pure line -- purine -- purine analog -- purine metabolism -- purine metabolism disorder -- purine nucleoside -- purine nucleoside phosphorylase -- purine nucleotide -- purine riboside -- purinergic receptor -- puromycin -- purpura -- pursuit tracking -- pus collection -- putamen -- putrescine -- Puumala virus -- PVC -- PVC (polyvinylchloride) -- PVM -- PVP -- pyelography -- pyelonephritis -- pyknolepsy -- pyloric region -- pyloric region disorder -- pyloric sphincter -- pyloric stenosis -- pyloroplasty -- pyoderma -- pyodermia -- pyorrhea -- pyramidal cell -- pyramidal tract -- pyran -- pyranose -- pyrazinamide -- pyrazine -- pyrazofurin -- pyrazole -- pyrazolidinedione -- pyrazolopyrimidine -- pyrene -- pyrethroid -- pyrexia -- pyridazine -- pyridine -- pyridine carboxylate -- pyridine nucleoside -- pyridine nucleotide -- pyridinol -- pyridinone -- pyridoindole -- pyridostigmine -- pyridoxal -- pyridoxal analog -- pyridoxal kinase -- pyridoxal phosphate -- pyridoxamine -- pyridoxine -- pyridoxol -- pyriform area -- pyrimethamine -- pyrimidine -- pyrimidine analog -- pyrimidine deoxyriboside -- pyrimidine dimer -- pyrimidine metabolism -- pyrimidine metabolism disorder -- pyrimidine nucleoside -- pyrimidine nucleotide -- pyrimidine phosphorylase -- pyrindole -- pyrogen -- pyrogen releasing substance -- pyroglyphid -- pyrone -- pyrophosphatase -- pyrophosphate -- pyrophosphotransferase -- pyrrole -- pyrrolidine -- pyrrolidinedione -- pyrrolidone -- pyrroline 5 carboxylate reductase -- Pyrrophyta -- pyruvate -- pyruvate carboxylase -- pyruvate decarboxylase -- pyruvate dehydrogenase -- pyruvate kinase -- pyruvate kinase deficiency -- pyruvate oxidase -- pyruvic carboxylase --

Q

Q fever -- QS -- QTL -- quadriplegia -- quail -- quailpox virus -- quality of life -- quantitative trait loci -- quantum chemistry -- quarantine -- quaternary ammonium compound -- quebrachamine -- quebrachine -- quercetin -- questionnaire -- quin 2 -- quinacrine -- quinazoline -- Quincke's edema -- quinidine -- quinine -- quinol -- quinolinate -- quinoline -- quinoline analog -- quinoline blue -- quinolizine -- quinolone -- quinone -- quinone reductase -- quinoxaline -- quinpirole -- quinuclidine -- quisqualate -- quisqualate receptor -- quorum sensing --

R

R factor -- R pipiens -- R plasmid -- R43 grant -- R44 grant -- rabbit -- rabbit fibroma virus -- rabbit kidney vaculolating virus -- rabbit papilloma -- rabbit papillomavirus -- rabies -- rabies vaccine -- rabies virus -- Rabson Mendenhall syndrome -- raccoon -- raccoon parvovirus -- raccoonpox virus -- race -- racemization -- racial difference -- racial discrimination -- racism -- raclopride -- rad (radiation dose unit) -- radarkymography -- radial keratotomy -- radiation -- radiation carcinogen -- radiation carcinogenesis -- radiation detector -- radiation dosage -- radiation effect (biological) -- radiation effect (chemical) -- radiation genetics -- radiation hazard -- radiation immunosuppression -- radiation induced mosaicism -- radiation leukemia -- radiation protection -- radiation protection drug -- radiation recovery -- radiation related cancer -- radiation related neoplasm -- radiation resistance -- radiation sensitivity -- radiation teletherapy -- radiation therapy -- radiation therapy dosage -- radiculoneuritis -- radio -- radio controlled electronic stimulator -- radioactive fallout -- radioactive hydrogen -- radioactive microsphere technique -- radioactive waste -- radioactivity analysis -- radioassay -- radioautography -- radiobiology -- radiocardiography -- radiochemical -- radiochemistry -- radiodiagnosis -- radiofluorescent probe -- radiofrequency -- radiography -- radioimmunoassay -- radioimmunoprecipitation -- radioisotope -- radioisotope implant in cancer therapy -- radioisotope labeling of chemical -- radiolabel -- radioligand -- radiological health -- radiologist -- radiology -- radiomimetic agent -- radionuclide -- radionuclide diagnosis -- radionuclide double label -- radionuclide emission tomography -- radionuclide imaging -- radionuclide implant -- radionuclide renography -- radionuclide scanning -- radionuclide therapy -- radiopharmacology -- radioprotective agent -- radioscopy -- radiosensitivity -- radiosensitizer -- radiotherapy -- radiotracer -- radiowave radiation -- radish mosaic virus -- radixin -- radon -- RAGE -- ragweed -- raloxifene -- Raman spectrometry -- Raman spectroscopy -- Rana -- random amplified polymorphic DNA technique -- random coil (protein) -- range of motion -- Ranikhet virus -- ranitidine -- RANK protein -- RANTES -- rapamycin -- RAPD -- rape -- raphe nucleus magnus -- rapid diagnosis -- rapid eye movement sleep -- rapid method -- rapid technique -- rare disease -- rare earth element -- Ras protein -- rat -- rat cytomegalovirus -- rat parvovirus -- rat virus -- ratfish -- rational emotive therapy -- rats -- Rauscher's virus -- rauwolfia alkaloid -- rauwolfine -- ray (fish) -- ray (radiation) -- Raynaud's disease -- Raynaud's phenomenon -- Rb gene -- Rb81 isotope -- Rb86 isotope -- RBC -- RBE -- RCC -- RDA -- rDNA -- reaction rate -- reaction rate (chemical) -- reactive depression -- reactive hyperemia -- reactive oxygen intermediate -- reactive oxygen species -- reactive psychotic depression -- reactive site -- reactive site (enzyme) -- reading -- reading disorder -- reading disorder diagnosis -- reagent -- reagent standard -- reagent standardization -- reagent testing -- real time model -- recA protein -- receptor -- receptor binding -- receptor coupling -- receptor density -- receptor downregulation -- receptor expression -- receptor for advanced glycation endproducts -- receptor function -- receptor internalization -- receptor mediated endocytosis -- receptor recycling -- receptor sensitivity -- receptor structure function -- receptor upregulation -- recessive oncogene -- Recklinghausen's disease -- Recklinghausen's neurofibromatosis -- recombinant DNA -- recombinant peptide -- recombinant protein -- recombinant vaccinia virus -- recombinant virus -- recombinant virus vaccine -- recombinase -- recommended daily allowance -- reconstituted skin -- reconstructive surgery -- recovery of function -- recreation -- recreation safety -- rectal disorder -- rectal neoplasm -- rectal prolapse -- rectocele -- rectosigmoid growth -- rectosigmoid neoplasm -- rectum -- rectum growth -- rectum neoplasm -- recurrence -- red algae -- red blood cell -- red monkey -- red nucleus -- red tide -- red wine -- redox -- redoxin -- reducing agent -- reducing diet -- reduction -- Reduviidae -- reflection spectrometry -- reflex -- reflex disorder -- reflex epilepsy -- reflex sympathetic dystrophy -- reflexology -- reflux esophagitis -- refractive keratoplasty -- refrigeration anesthesia -- Refsum disease -- regeneration -- regional anesthesia -- regional difference -- regional medical planning -- regression -- regulatory gene -- regulatory gene product -- regulon -- rehabilitation -- rehearsal -- Reiki -- reinforcer -- Reiter treponeme -- Reiter's syndrome -- relapse -- relapsing fever -- relapsing fever tick -- relative biological effectiveness -- relaxation -- relaxation spectrometry -- relaxation therapy -- relaxation training -- relaxin -- relaxing enzyme -- release factor -- religion -- religious group -- reliveran -- REM (roentgen equivalent man) -- REM sleep -- remedial education -- remission -- remote control electronic stimulator -- remote sensing -- renal -- renal artery -- renal artery obstruction -- renal calculi -- renal cancer -- renal cell carcinoma -- renal cortex -- renal epithelium -- renal failure -- renal glomerulus -- renal glycosuria -- renal hypertension -- renal hypoxia -- renal ischemia -- renal medulla -- renal osteodystrophy -- renal rickets -- renal sclerosis -- renal toxin -- renal transplantation -- renal tubular reabsorption -- renal tubular transport -- renal tubule -- renal tubule acidosis -- renaturation of protein -- Renilla luciferin 2 monooxygenase -- renin -- renin angiotensin system -- renin hypertension -- renin induced hypertension -- rennin -- renoprival hypertension -- Rentylin -- Reoviridae -- Reoviridae disease -- reovirus -- reovirus 1 -- reovirus 2 -- reovirus 3 -- repair endonuclease -- repair enzyme -- reperfusion -- repetitive motion injury -- repetitive transcranial magnetic stimulation -- replicase -- replication -- replication therapy -- replicator -- replicon -- reporter gene -- repository -- representational difference analysis -- repression -- reproduction -- reproductive development -- reproductive hormone -- reproductive system -- reproductive system circulation -- reproductive system disorder -- reproductive system disorder chemotherapy -- reproductive system disorder diagnosis -- reproductive system disorder pharmacotherapy -- reproductive system infection -- reproductive system neoplasm -- reproductive system pharmacology -- reproductive system surgery -- reproductive tissue transplantation -- reptile poison -- Reptilia -- reptilian type C virus -- RER (rough endoplasmic reticulum) -- research alternatives to animal use -- research data dissemination -- research design -- research facility -- reserpate derivative -- reserpine -- residence -- residential care facility -- residential mobility -- residual cancer -- residual disease -- residual neoplasm -- residual tumor -- resin -- resistance (electrical) -- resistance factor -- resorcinol -- respiration regulation -- respiration regulatory center -- respirator -- respiratory acidosis -- respiratory airflow disorder -- respiratory airflow measurement -- respiratory airway clearance -- respiratory airway obstruction -- respiratory airway pressure -- respiratory airway volume -- respiratory anoxia -- respiratory assist -- respiratory burst (leukocyte) -- respiratory burst oxidase -- respiratory center dysfunction -- respiratory circulation -- respiratory circulation disorder -- respiratory dead space -- respiratory disease /disorder therapy -- respiratory disease therapy -- respiratory disorder -- respiratory disorder chemotherapy -- respiratory disorder diagnosis -- respiratory disorder epidemiology -- respiratory disorder pharmacotherapy -- respiratory disorder therapy -- respiratory distress syndrome of newborn -- respiratory electronic stimulator -- respiratory enzyme -- respiratory epithelium -- respiratory examination -- respiratory failure -- respiratory function -- respiratory gas -- respiratory gas analyzer -- respiratory gas level -- respiratory gas transport -- respiratory hypersensitivity -- respiratory hypoxia -- respiratory imaging -- respiratory infection -- respiratory infection virus -- respiratory insufficiency -- respiratory intensive care -- respiratory muscle -- respiratory neoplasm -- respiratory nitrate reductase -- respiratory oxygen -- respiratory oxygenation -- respiratory periodicity -- respiratory pharmacology -- respiratory pneumotachography -- respiratory protein -- respiratory reflex -- respiratory surgery -- respiratory syncytial virus -- respiratory system -- respiratory therapy -- respiratory toxin -- respiratory transplantation -- respiratory virus -- respiratory visualization -- response -- response generalization -- rest -- restenosis -- resting metabolic rate -- resting phase (cell cycle) -- resting potential -- restorative dentistry -- restraint -- restricted diet -- restricted physical activity -- restriction endonuclease -- restriction enzyme -- restriction fragment length polymorphism -- restriction mapping -- resuscitation -- reticular dysgenesis -- reticular formation -- reticulocyte -- reticuloendothelial stimulant -- reticuloendothelial system -- reticuloendotheliosis -- reticuloendotheliosis virus -- reticulospinal tract -- reticulum cell -- reticulum cell lymphoma -- retina -- retina circulation -- retina circulation disorder -- retina degeneration -- retina detachment -- retina disorder -- retina hemorrhage -- retina photosensitive pigment -- retina visual transduction -- retinal -- retinal (bacteriorhodopsin) -- retinal adaptation -- retinal bipolar neuron -- retinal cone -- retinal correspondence -- retinal ganglion -- retinal pigment epithelium -- retinal reductase -- retinal regeneration -- retinal screening pigment -- retinaldehyde -- retinene -- retinitis -- retinitis pigmentosa -- retinoate -- retinoate receptor -- retinoblastoma -- retinoblastoma gene -- retinoblastoma protein -- retinochoroiditis -- retinography -- retinoid -- retinoid binding protein -- retinoid therapy of cancer -- retinol -- retinopathy of prematurity -- retirement -- retransplantation -- retrobulbar neuritis -- retrograde transport -- retrolental fibroplasia -- retroperitoneal neoplasm -- Retrovir -- Retroviridae -- Retroviridae disease -- Retrovirus -- Rett syndrome -- reuptake -- revascularization surgery -- reversal learning -- reverse tolerance -- reverse transcriptase -- reverse transcriptase inhibitor -- reverse transcriptase PCR -- reverse transcriptase polymerase chain reaction -- reversed phase chromatography -- revertase -- review -- reward -- Reye's syndrome -- RF coil -- RFLP -- RGD (peptide) -- RGD (sequence) -- Rh blood group -- rhabdomyosarcoma -- Rhabdoviridae -- Rhabdovirus -- Rhabdovirus carpia -- Rhadinovirus -- rheoencephalography -- rhesus monkey -- rheumatic endocarditis -- rheumatic fever -- rheumatic heart disease -- rheumatism -- rheumatoid arthritis -- rheumatoid factor -- rheumatoidlike arthritis -- rhinencephalon -- rhinitis -- rhinoceros -- Rhinocladiella -- rhinovirus -- Rhizidiovirus -- Rhizobiaceae -- Rhizobium -- Rhizobium radiobacter -- Rhizopoda -- RHO (GTP binding protein) -- rhodanese -- Rhodesian trypanosome -- rhodium -- Rhodnius -- Rhodobacter -- Rhodococcus -- Rhodophyta -- Rhodopseudomonas -- rhodopsin -- rhodopsin kinase -- Rhodospirillales -- Rhodospirillum -- Rhodotorula -- rhodotoxin -- rhombencephalon -- RHR heart reflex -- Rhus dermatitis -- rhythm method -- RIA -- rib -- ribavirin -- riboflavin -- riboflavin deficiency -- ribonuclease H -- ribonuclease I -- ribonuclease II -- ribonuclease III -- ribonuclease P -- ribonucleic acid -- ribonucleoprotein -- ribonucleoside -- ribonucleotide -- ribonucleotide reductase -- ribopolynucleotide -- ribose -- ribose phosphate -- ribose phosphate pyrophosphokinase -- riboside -- ribosomal DNA -- ribosomal protein -- ribosomal RNA -- ribosome -- ribosyltransferase -- ribozyme -- rice -- rice dwarf virus -- rice gall dwarf virus -- rice ragged stunt virus -- ricefish -- ricin -- ricinoleate -- rickets -- Rickettsia -- Rickettsia prowazekii -- Rickettsia psittaci -- Rickettsia quintana -- Rickettsia rickettsii -- Rickettsia trachomae -- Rickettsiaceae -- rickettsial disease -- rickettsial pox -- Rickettsiales -- Rickettsiales disease -- ridogrel -- rifabutin -- rifamide -- rifampicin -- rifampin -- rifamycin -- rifapentine -- Rift Valley fever virus -- Riley Day syndrome -- Riley's virus -- rinderpest virus -- ringworm -- riot -- risperidone -- ristocetin -- Ritalin -- ritonavir -- rituxan -- rituximab -- river blindness -- Rivotril -- RNA -- RNA amplification -- RNA analysis -- RNA binding protein -- RNA biosynthesis -- RNA blot analysis -- RNA blot hybridization -- RNA blotting -- RNA chemical synthesis -- RNA directed DNA polymerase -- RNA directed RNA polymerase -- RNA editing -- RNA interference -- RNA library -- RNA ligase -- RNA marker -- RNA methylation -- RNA nucleotidyltransferase -- RNA polymerase -- RNA probe -- RNA purification -- RNA replication -- RNA sequence -- RNA sequencing -- RNA splicing -- RNA synthesis -- RNA transport -- RNA tumor virus -- RNA virus -- RNAi -- RNase -- RNase A -- RNase D -- RNase H -- RNase I -- RNase III -- RNase O -- RNase P -- RNase protection assay -- RNP -- Ro31-8959-003 -- Robinul -- robotics -- ROC (receptor operated channel) -- Rochalimaea -- Rochalimaea henselae -- Rochalimaea quintana -- Rocky Mountain spotted fever -- rod cell -- rod outer segment -- rodent plasmodia -- Rodentia -- rodenticide -- roentgen videodensitometry -- ROESY -- Roferon A -- Rohypnol -- role -- role model -- role playing (psychodrama) -- root -- root canal (anatomy) -- root canal filling material -- root canal surgery -- root canal therapy -- root resection (dental) -- Rorschach test -- ROS (rod outer segment) -- rose bengal -- Rose's tamponade -- rosette test -- rosiglitazone -- Ross River virus -- rotamase (peptidyl proline) -- Rotavirus -- Rotavirus disease -- rotavirus vaccine -- rotenone -- Rothia dentocariosa -- Rotifera -- rougeole virus -- roughage -- round window -- roundworm -- Rous sarcoma -- Rous sarcoma virus -- Roussy Levy syndrome -- RP -- rRNA -- RS 61443 -- RSH Syndrome -- RSV -- RT PCR -- RTV -- RU 486 -- RU486 -- rubber -- rubber allergen -- rubber allergy -- rubella -- rubella virus -- rubeola -- rubeola virus -- rubidium -- Rubivirus -- rubredoxin -- rubrefacient -- rubrospinal tract -- ruga -- runaway child -- runner's anemia -- running -- runt disease -- rupture -- ruptured disk -- rural area -- rural health -- rural planning -- Russia -- Russian autumn encephalitis virus -- ruthenium -- ryanodine -- ryanodine receptor -- rye grass --

S

S adenosylmethionine -- S antigen -- S nucleosidylaminoacid -- S phase (cell cycle) -- S-S rearrangase -- S06 grant -- S07 grant -- S10 grant -- S14 grant -- S15 grant -- S35 isotope -- SA 11 simian virus -- SA2 virus -- Sabia virus -- sac fungi -- saccade -- saccharase -- saccharogen amylase -- Saccharomyces -- Saccharomyces cerevisiae -- sacral vertebrae -- sadism -- sadness -- sadomasochism -- Saethre Chotzen syndrome -- safe sex /sex abstinence -- safety engineering -- safety equipment -- safrole -- SAGE -- Sagiyama virus -- Saguinus -- SAIDS -- Saimiri -- Saimirine herpesvirus 1 -- Saint Johns wort -- salamander -- salazosulfapyridine -- salicylate -- salicylazosulfapyride -- Salientia -- saline -- saliva -- salivary disorder -- salivary gland -- salivary gland disorder -- salivary gland neoplasm -- salivary gland virus -- salivary sulfated glycoprotein -- salivation -- salmon -- Salmonella -- Salmonella food poisoning -- Salmonella infection -- Salmonella typhi -- Salmonella typhimurium -- Salmonella vaccine -- Salmonellosis -- Salmonidae -- salpingectomy -- salpingitis -- salt -- salt bacteria -- salt balance -- salt gland -- salt hypertension from excess dietary salt -- salt intake -- salt water environment -- salt water organism -- saluresis -- saluretic -- Salvadoran -- SAM -- Samoan -- sample collection -- sampling -- San Joaquin Valley fever -- sand dollar -- sandfly -- sandfly fever virus group -- Sandhoff disease -- Sandhoff Jatzkewitz disease -- sandimmune -- Sandjimba virus -- Sandostatin -- Sanfilippo's syndrome -- sanitation -- Santeria -- Sao Paulo typhus -- SAPK -- saquinavir -- saralasin -- sarcochlorin -- Sarcodina -- sarcoidosis -- sarcolemma -- sarcolysin -- sarcoma -- sarcoma 180 -- sarcomere -- sarcopenia -- Sarcophagidae -- sarcoplasmic reticulum -- sarcosine -- sarin -- SARS -- SARS virus -- satellite cell -- satellite virus -- satiation -- satiety -- satiety center -- satisfaction -- saturated bonds -- saturated fat -- saturated fatty acid -- Saudi Arabia -- saw palmetto -- saxitoxin -- SC58635 -- scabies -- scallop -- Scalopus aquaticus -- scalp -- Scandentia -- Scandinavian -- Scandinavian country -- scanning electron microscopy -- scanning force microscopy -- scanning transmission electron microscopy -- scanning tunneling microscopy -- scar -- scarlet fever -- scatter factor -- scavenger receptor -- SCD -- SCF -- SCH 23390 -- SCH52365 -- Scheuermann's disease -- Schiff base -- Schilder's disease -- Schilling's leukemia -- Schistosoma -- Schistosoma hematobium -- Schistosoma japonicum -- Schistosoma mansoni -- schistosomiasis -- schizoaffective disorder -- schizoid personality -- schizophrenia -- Schizophyta -- Schizosaccharomyces pombe -- schizotypal personality disorder -- Schlemm's canal -- Schlemm's canal occlusion -- Schmidt syndrome -- school -- school health service -- Schultz syndrome -- Schwalbe's nucleus -- Schwann cell -- schwannoma -- sciatic nerve -- sciatica -- SCID -- SCID hu mouse -- SCID mouse -- science education -- scientific organization -- scinderin -- scintigraphy -- scintillation camera -- scintillation counter -- scintillation spectrometry -- Sciuridae -- Sciuromorpha -- SCLC -- sclera -- scleral encircling -- scleredema -- scleroderma -- scleroprotein -- sclerosis -- SCN -- scoliosis -- scopolamine -- scorpion -- Scotland -- scotoma -- scrapie -- screw worm -- scup -- scurvy -- Scyphozoa -- SDAV (sialodacryoadenitis virus) -- SDH -- SDS PAGE -- SDS polyacrylamide gel electrophoresis -- SDZ RAD -- sea anemone -- sea cucumber -- sea hare -- sea lily -- sea lion -- sea otter -- sea slug -- sea snail -- sea squirt -- sea star -- sea urchin -- sea water -- seafood -- seafood poisoning -- seal -- sealpox virus -- season -- seasonal affective disorder -- seasonal depression -- sebaceous gland -- sebaceous gland neoplasm -- seborrheic keratosis -- sebum -- SecB protein -- secobarbital -- second hand smoke -- second messenger -- second transplant -- secondary antibody deficiency -- secondary degeneration -- secondary immune deficiency -- secondary immune response -- secondary infection -- secondary school -- secretase -- secretin -- secretion -- secretory immune system -- secretory protein -- sectioning -- sedation -- sedative -- sedimentation -- sedimentation coefficient -- sedimentation constant -- sedimentation equilibrium -- sedimentation velocity -- seed -- seg (blood count) -- segmental glomerulonephritis -- segregation -- seizure -- selected ion monitoring -- selectide technique -- selectin -- selegiline -- selenated sulfur aminoacid -- selenium -- selenium binding protein -- selenium poisoning -- selenomethionine -- selenoprotein -- selenoprotein p -- self administration (animal or experimental) -- self administration (prescribed) -- self antigen -- self care -- self care (nonmedical) -- self concept -- self control -- self destructive behavior -- self diagnosis -- self esteem -- self examination -- self help -- self help organization -- self injurious behavior -- self medication -- self medication (nonprescribed) -- self medication (prescribed) -- self mutilating behavior -- self organization -- self reactive antibody -- self recognition (immune) -- self reliance -- self renewing cell -- self stimulation -- self tolerance (immune) -- Selomonas -- semantics -- semen -- Semicid -- semicircular canal -- semicircular duct -- semiconduction -- semiconductor -- semilunar valve -- seminal fluid -- seminal vesicle -- seminiferous tubule -- seminoma -- semiquinone -- Semliki Forest virus -- Sendai virus -- senecifoline -- senecine -- senecio alkaloid -- senescence -- senile deafness -- senile dementia -- senile plaque -- sensation -- sense organ -- sensitivity training -- sensitizing antigen -- sensor -- sensor (biological) -- sensorimotor control mechanism -- sensorimotor system -- sensorineural hearing loss -- sensory cortex -- sensory depression -- sensory deprivation -- sensory discrimination -- sensory disorder -- sensory disorder chemotherapy -- sensory disorder diagnosis -- sensory disorder pharmacotherapy -- sensory disorder therapy -- sensory feedback -- sensory gating -- sensory mechanism -- sensory motor system -- sensory nerve -- sensory neuropathy -- sensory receptor -- sensory signal detection -- sensory threshold -- sensory transducer cell -- Seoul virus -- separation -- Sephardim -- Sepia -- sepsis -- septal defect -- septal nuclei -- septic shock -- septicemia -- sequence tagged site -- sequential perception -- SER (smooth endoplasmic reticulum) -- Serbia -- serenoa repens -- serial analysis of gene expression -- serine -- serine dehydratase -- serine hydroxymethylase -- serine proteinase -- serine sulfhydrase -- serine threonine kinase -- serine threonine protein kinase -- serodiagnosis -- serology -- seropositive (AIDS test) -- serosa -- serotherapy preparation -- serotonin -- serotonin inhibitor -- serotonin receptor -- serotonin reuptake inhibitor -- serotonin transporter -- serotyping -- Serpasil -- serpins -- Serratia -- Serratia infection -- Serratia marcescens -- Sertoli cell -- Sertoli cell tumor -- sertraline -- serum -- serum albumin -- serum aminoacid -- serum free media -- serum globulin -- serum hepatitis -- serum protein -- serum sickness -- serum thymic factor -- sesquiterpene -- Seventh Day Adventist -- severe acute respiratory syndrome -- severe combined immunodeficiency -- severin -- sevin -- sewage -- sewage treatment -- sex -- sex abstinence -- sex abuse -- sex behavior -- sex behavior disorder -- sex chromosome -- sex cycle -- sex determinant antigen -- sex determination -- sex development -- sex development disorder -- sex difference -- sex differentiation -- sex differentiation disorder -- sex discrimination -- sex drive -- sex education -- sex factor -- sex hormone -- sex hormone analog -- sex linked trait -- sex offense -- sex partner -- sex role -- sex selection of fetus -- sex sterilization -- sexual abstinence -- sexual abuse -- sexual cell -- sexual dimorphism (cellular) -- sexual dimorphism (noncellular) -- sexual harassment -- sexual orientation -- sexual polymorphism (cellular) -- sexually transmitted disease -- Sezary syndrome -- SF 1 -- SF1 -- Sf9 cell line -- SFO (subfornical organ) -- SGP2 -- SH antigen (serum hepatitis antigen) -- sham feeding -- shared health service -- shark -- shear stress -- sheathed bacteria -- sheep -- sheep liver fluke -- sheeppox virus -- shibire gene product -- shiga toxin -- shiga-like toxin -- Shigella -- Shigella dysenteriae -- shigella toxin -- Shigella vaccine -- shigellosis -- shikimate -- shingles -- shivering -- shock -- shock (electrical injury) -- shock lung -- shock therapy -- Shope fibroma virus -- Shope papilloma -- Shope papilloma virus -- short bowel syndrome -- short chain fatty acid -- short gut syndrome -- short term memory -- shoulder -- shrew -- shrimp -- Shwartzman phenomenon -- Shy Drager syndrome -- sialadenitis -- sialate -- sialidase -- sialodenectomy -- sialomucin -- sialophorin -- sialylation -- sialyltransferase -- siamese fighting fish -- sibling -- sibling order -- sibling relations -- sicca syndrome -- sick building syndrome -- sickle cell anemia -- sickle cell crisis -- sickle cell disease -- sicklemia -- sickling inhibitor -- SICM (scanning ion conductance microscopy) -- side effect -- sideroblastic anemia -- siderophore -- siderosis -- SIDS -- sight for the blind -- sigma receptor -- sigmoid colon -- sigmoidoscopy -- sign -- sign language -- signal peptide -- signal recognition particle -- silane -- silibinin -- silicate -- silicic acid chromatography -- silicon -- silicon compound -- silicone gel -- silicone oil -- silicone rubber -- silicosis -- silkworm -- siloxane -- silver -- silver chloride electrode -- silver impregnation -- simian AIDS -- simian foamy virus -- simian hepatitis A virus -- simian human immunodeficiency virus -- simian immunodeficiency virus -- simian lymphoproliferative syndrome -- simian parainfluenza virus -- simian plasmodia -- simian T cell lymphotrophic virus -- simian virus -- simian virus 40 -- Simmonds' disease -- simple schizophrenia -- simple society -- Simplexvirus -- Simuliidae -- Simulium -- simvastatin -- Sin Nombre virus -- Sindbis virus -- Sinemet -- single cell analysis -- single molecule -- single nucleotide polymorphism -- single person -- single photon absorptiometry -- single photon emission computed tomography -- single strand conformation polymorphism -- singlet oxygen -- singlet state -- sinoatrial node -- sinusitis -- Siphonaptera -- Siphoviridae -- Sipple's syndrome -- sirolimus -- sister -- sister chromatid exchange -- site directed mutagenesis -- site specific DNA recombination (naturally occurring) -- sitosterol -- SIV -- size perception -- Sjogren Larsson syndrome -- Sjogren's syndrome -- skate -- skeletal circulation -- skeletal disorder -- skeletal disorder chemotherapy -- skeletal disorder diagnosis -- skeletal disorder pharmacotherapy -- skeletal disorder therapy -- skeletal imaging -- skeletal injury -- skeletal movement -- skeletal muscle -- skeletal muscle protease -- skeletal neoplasm -- skeletal pharmacology -- skeletal preservation -- skeletal prosthesis -- skeletal regeneration -- skeletal sonography -- skeletal stress -- skeletal surgery -- skeletal system -- skeletal transplantation -- skeletal visualization -- SKF 38393 -- skilled nursing facility -- skin -- skin abscess -- skin absorption -- skin allergy -- skin cancer -- skin chymotryptic proteinase -- skin circulation -- skin color -- skin derivative -- skin disorder -- skin disorder chemotherapy -- skin disorder diagnosis -- skin disorder pharmacotherapy -- skin hyperkeratosis -- skin hyperplasia -- skin hypersensitivity -- skin infection -- skin irritant -- skin irritation -- skin neoplasm -- skin patch -- skin pharmacology -- skin sensitizing antibody -- skin transplantation -- skin tryptase -- skin ulcer -- skull -- skull abnormality -- skunk -- slaframine -- SLE -- sleep -- sleep apnea -- sleep deprivation -- sleep disorder -- sleep disordered breathing -- sleep epilepsy -- sleep measurement -- sleep regulation -- sleep regulatory center -- sleep walking -- sleeping pill -- slime mold -- sloth -- Slovenia -- slow axonal flow -- slow axonal transport -- slow potential -- slow reaction (chemical) -- slow release drug -- slow virus infection of CNS -- slow wave sleep -- slug -- slum -- slum clearance -- small airways disease -- small bowel -- small cell carcinoma of lung -- small cell lung cancer -- small intestine -- small molecule -- small nuclear ribonucleoprotein -- small nuclear RNA -- small social group -- smallpox -- smallpox vaccine -- smallpox virus -- smegma -- smell -- Smith Lemli Opitz syndrome -- Smith Magenis syndrome -- Smith-Opitz-Inborn syndrome -- smog -- smoke inhalation -- smokeless tobacco -- smoking -- smoking cessation -- smoking hashish -- smoking marijuana -- smoking tobacco -- smooth muscle -- smooth muscle myosin light chain kinase -- smooth pursuit eye movement -- SMRT (Silencing Mediator of Retinoid Thyroid Receptor) -- SMX -- snail -- snake -- snake bite allergen -- snake bite poison -- snake bite venom -- SNCA -- sneezing -- sniffing drug -- snoring -- SNP -- snRNA -- snRNP -- snuff -- soap -- Sobemovirus -- sobriety -- social adaptation -- social adjustment -- social behavior -- social behavior disorder -- social change -- social class -- social competition -- social conformity -- social consciousness -- social control -- social cooperation -- social deprivation -- social desirability -- social distance -- social disturbance -- social dominance -- social environment -- social facilitation -- social group -- social group process -- social integration -- social mobility -- social model -- social organization -- social perception -- social problem -- social psychology -- social role -- social science -- social science research tag -- Social Security -- social separation -- social service -- social service evaluation -- social space -- social status -- social support network -- social work -- socialization -- socialized aggressive child behavior -- socialized nonaggressive child behavior -- socioeconomics -- socioenvironment -- sociolinguistics -- sociologist -- sociology -- sociometry -- sociopathic personality -- SOD -- sodium -- sodium acetylhomotaurine -- sodium bicarbonate -- sodium channel -- sodium channel blocker -- sodium chloride -- sodium hydrogen antiporter -- sodium hydrogen exchanger -- sodium ion -- sodium potassium ATPase -- sodium potassium exchanging ATPase -- sodium potassium pump -- sodium pump -- soft palate -- software design -- software development -- software engineering -- soil -- soil microbiology -- soil pollution -- soil sampling -- Soja hispida -- sol -- Solanaceae -- solar elastosis -- solar radiation -- solid solution -- solid state -- solid state electronics -- solitary tract nucleus -- solubility -- Solumedrol -- solute -- solution -- solution hybridization -- solvent -- solvent extraction -- solvolysis -- soma -- soman -- somatesthesia -- somatic afferent nerve -- somatic reflex -- somatomammotropin -- somatomedin -- somatosensory cortex -- somatostatin -- somatostatin analog -- somatotropin -- somatotype -- somatropin -- somesthesis -- somesthetic sensory cortex -- somnifacient -- sonar -- songbird -- sonogram -- sonography -- sooty mangabey -- sorbinil -- sorbitol -- sorbitol 6 phosphate dehydrogenase -- sorbitol dehydrogenase -- Sorex -- sorting -- SOS (son of sevenless) protein -- SOS exchange factor -- sotalol -- sound -- sound deprivation -- sound frequency -- sound frequency discrimination -- sound impedance -- sound induced deafness -- sound localization -- sound measurement -- sound perception -- South America -- South American -- South American hemorrhagic fever viruses -- southeast Asia -- southeast Asian -- southern blotting -- southern hybridization -- southwestern blotting -- Soviet Union -- sowbug -- soybean -- space medicine -- space perception -- spaces of Fontana -- Spanish American -- sparrow -- sparrowpox virus -- sparsomycin -- sparteine -- spasm -- spasmophemia -- spastic colon -- spastic diplegia -- spastic paralysis -- spastic pseudosclerosis -- spatial orientation -- SPB -- SPCL (synthetic peptide combinatorial library) -- special education -- special interest group -- species difference -- species typical behavior -- specific gravity -- specific language impairment -- specimen collection -- SPECT -- spectacles -- spectrin -- spectrofluorometry -- spectrometry -- spectrophosphorimetry -- spectrophotometry -- spectroscopy -- speech -- speech disorder -- speech disorder diagnosis -- speech perception -- speech recognition -- speech synthesizer -- speech therapy -- speech viewer -- speechreading -- spelling -- SPEM -- sperm -- sperm analysis -- sperm capacitation -- sperm count -- sperm mobility -- sperm morphology -- sperm motility -- sperm protein -- spermatic vein -- spermaticide -- spermatogenesis -- spermatogenesis inhibitor -- spermicide -- spermidine -- spermidine acetyltransferase -- spermidine spermine acetyltransferase -- spermine -- spermine acetyltransferase -- SPF (specific pathogen free) -- Sphaerophorus fusiformis -- spheroplast -- sphincter (rectal and anal) -- Sphingidae -- sphingolipid -- sphingolipidosis -- sphingomyelin -- sphingomyelin lipidosis -- sphingomyelin phosphodiesterase -- sphingomyelinase -- sphingomyelinase deficiency -- sphingosine -- sphinx moth -- sphygmomanometer -- spider -- spider monkey -- spider poison -- spike potential -- spina bifida -- spinach -- Spinacia -- spinal block -- spinal canal -- spinal column -- spinal cord -- spinal cord compression -- spinal cord disorder -- spinal cord imaging -- spinal cord injury -- spinal cord mapping