eighty-nine isolates of neisseria gonorrhoeae from 89 male urethritis patients were studied for beta-lactamases ( penicillinase ) production , and their susceptibilities to benzylpenicillin , amoxicillin , piperacillin , clavulanic acid/amoxicillin ( augmentin ) , cephalexin , cefotaxime , spectinomycin and minocycline were determined by an agar plate-dilution method .
C0597979
beta-lactamases
C0030841
penicillinase