a total of 103 isolates of pseudomonas aeruginosa were studied to compare the in vitro effectiveness of three beta-lactam antibiotics ( piperacillin , ticarcillin , and mezlocillin ) when used alone and in combination with four aminoglycosides ( tobramycin , gentamicin , amikacin , and netilmicin ) .
C0002556
aminoglycosides
C0017436
gentamicin