the qualitative assay for beta-lactamase activity performed after induction with methicillin demonstrated strong correlation between presence or absence of beta-lactamases and sensitivity of the bacteria to penicillin g. beta-lactamase activity could be found in almost all strains with mic greater than or equal to 0.25 micrograms/ml for penicillin g .
C0597979
beta-lactamases
C0004611
bacteria