Stimulation of variants of Staphylococcus aureus by penicillin.
D010403:Penicillin Resistance; D010405:Penicillinase / Q000378:metabolism; D010406:Penicillins / Q000494:pharmacology*; D013210:Staphylococcus / Q000187:drug effects* / Q000201:enzymology / Q000254:growth & development
D010406:Penicillins; D010405:Penicillinase