combinations of erythromycin with penicillins ( ampicillin , azlocillin , carbenicillin and mezlocillin ) and with aminoglycosides ( amikacin , gentamicin and sisomicin ) were tested for their efficacy against escherichia coli and staphylococcus aureus using the checkerboard technique .
C0017436
gentamicin
C0037209
sisomicin