Penicillin.
D001419:Bacteria / Q000187:drug effects; D004345:Drug Industry; D006076:Government; D049672:History, 19th Century; D049673:History, 20th Century; D049690:History, Ancient; D006801:Humans; D008131:London; D008297:Male; D010406:Penicillins / Q000266:history* / Q000494:pharmacology; D014481:United States
D010406:Penicillins