the in vitro synergistic activities of moxalactam , cefoperazone , or cefotaxime in combination with amikacin or piperacillin were compared against aminoglycoside-susceptible and aminoglycoside-resistant isolates of pseudomonas aeruginosa and serratia marcescens by the checkerboard agar dilution method .
C0002499
amikacin
C0002556
aminoglycoside