Staphylococcal penicillinase and the new penicillins.
D010405:Penicillinase / Q000737:chemistry*; D010406:Penicillins / Q000737:chemistry*; D013210:Staphylococcus / Q000737:chemistry*
D010406:Penicillins; D010405:Penicillinase
PENICILLIN/chemistry; PENICILLINACE/chemistry; STAPHYLOCOCCUS/chemistry