about 19 % ( 18/94 ) of beta-lactamase producing bacteria transferred beta-lactamase producing capacity to e. coli k12 by conjugation and a significant increase of mics of each antibiotic , except that of cefotaxime , was observed in e. coli k12 that acquired capacity to produce beta-lactamase by conjugation .
C0004611
bacteria
C0597979
beta-lactamase