ceftazidime , moxalactam , cefotaxime , ceftizoxime and cefoperazone , all of which are new beta-lactam compounds , were compared with two penicillins , piperacillin , ticarcillin , and three aminoglycosides , gentamicin , tobramycin and amikacin .
C0002556
aminoglycosides
C0017436
gentamicin