title: The incidence of penicillin-sensitive variant colonies in penicillinase-producing strains of Staphylococcus pyogenes.
authors.forename: M
authors.initials: M
authors.lastname: BARBER
mesh_terms: D006801:Humans; D015994:Incidence; D010405:Penicillinase; D010406:Penicillins / Q000494:pharmacology*; D013203:Staphylococcal Infections; D013210:Staphylococcus; D013212:Staphylococcus epidermidis
chemical_list: D010406:Penicillins; D010405:Penicillinase
keywords: PENICILLIN/effects; STAPHYLOCOCCI/albus