the beta-lactams ( penicillin , ampicillin , cefoxitin and cephalexin ) , macrolides ( erythromycin and azithromycin ) , quinolones ( ciprofloxacin and ofloxacin ) , nitrofurans , gentamicin and tetracycline all had mic90 values of less than or equal to 0.5 mg/l .
C0034428
quinolones
C0008809
ciprofloxacin