we tested ofloxacin , norfloxacin , nalidixic acid , amoxicillin , amoxicillin-clavulanic acid , gentamicin , co-trimoxazole and nitrofurantoin against 143 gram-negative and 99 gram-positive bacteria , all urea-splitting , isolated from patients with urinary tract infections .
C0028156
nitrofurantoin
C0042029
urinary tract infections