Antibiotics
This is an old revision of this page, as edited by Aschlafly (talk | contribs) at 19:38, March 12, 2007. It may differ significantly from current revision.
An antibiotic is a substance derived from a microorganism which, in a dilute solution, is able to kill a bacterial infection. An antibiotic is useless against a virus, however.
Antibiotics became widely used only after World War II. The history of antibiotics began, however, with the discovery in 1928 of penicillin by Alexander Fleming.