Difference between revisions of "Antibiotics"
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Revision as of 05:20, January 14, 2007
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.