Experimental Biology and Medicine · 1943 · 58 citations · 0 references
Life SciencesMicrobiologyBacteriologyMedical MicrobiologyMicrobial PathogenesisAntibacterial ResistanceAntibiotic ResistanceAntibiotic Resistance MechanismsBacterial Virulence FactorsMicrobial Virulence FactorsResistance In Gram-positive BacteriaPenicillin ResistanceResistance Mechanisms In Gram-positive BacteriaResistance Mechanisms In StaphylococciResistance Mechanisms In Streptococci
Three cultures of staphylococci, one of Streptococcus pyogenes and 3 of pneumococci, Types I, II, and III, showed wide differences in degree of resistance after cultivation in presence of penicillin.