Evolutio of natural resistance to the newer penicillins.
D004351:Drug Resistance; D004352:Drug Resistance, Microbial; D007113:Immunity, Innate; D008712:Methicillin; D010400:Penicillin G; D010406:Penicillins; D013203:Staphylococcal Infections
D010406:Penicillins; D010400:Penicillin G; D008712:Methicillin
DRUG RESISTANCE, MICROBIAL; METHICILLIN; PENICILLIN; PENICILLIN G; STAPHYLOCOCCAL INFECTIONS