the antimicrobials tested were penicillin g , ampicillin , carbenicillin , ticarcillin , piperacillin , mezlocillin , cephalothin , cefoxitin , cefamandole , latamoxef ( moxalactam ) , cefotaxime , cefoperazone , ceftazidime , ceftriaxone , n-formimidoyl thienamycin , sch 29482 , chloramphenicol and vancomycin .
C0002680
ampicillin
C0031955
piperacillin