[New results and possibilities in penicillin research and therapy: semisynthetic penicillins].
D006801:Humans; D008712:Methicillin; D010404:Penicillin V / Q000031:analogs & derivatives; D010406:Penicillins; D012106:Research
D010406:Penicillins; C100209:phenethicillin; D008712:Methicillin; D010404:Penicillin V
METHICILLIN; PENICILLIN; PHENETHICILLIN