The term used by bacteriologistPaul Ehrlich to describe his sought-for goal: a specific cure for syphilis which would attack the syphilis spirochaete while having no effect whatsoever on human tissue. He also applied the term to the drug he developed circa 1910, Salvarsan (arsphenamine). Salvarsan was not truly the "magic bullet" for syphilis because of significant deleterious side effects. The phrase "magic bullet" has, however, become associated with Ehrlich and Salvarsan and is still used today to characterize wished-for drugs.