the more active antibiotics against the strains with high-level resistance to gentamicin were : mezlocillin ( mic90 = 1.0 mg/l ) , piperacillin and vancomycin ( mic90 = 2.0 mg/l ) , and ampicillin and imipenem ( mic90 = 4.0 mg/l ) .
C0025893
mezlocillin
C0002680
ampicillin