the activity of penicillin g , ampicillin , carbenicillin , ticarcillin , azlocillin , mezlocillin and piperacillin against 102 beta-lactamase-producing , methicillin-sensitive strains of staphylococcus aureus was determined by agar dilution ( method a ) and broth microdilution ( method b ) techniques .
C0002680
ampicillin
C0031955
piperacillin