The incidence of penicillin-sensitive variant colonies in penicillinase-producing strains of Staphylococcus pyogenes.
D006801:Humans; D015994:Incidence; D010405:Penicillinase; D010406:Penicillins / Q000494:pharmacology*; D013203:Staphylococcal Infections; D013210:Staphylococcus; D013212:Staphylococcus epidermidis
D010406:Penicillins; D010405:Penicillinase
PENICILLIN/effects; STAPHYLOCOCCI/albus