Nalidixic acid.
D004352:Drug Resistance, Microbial; D004755:Enterobacteriaceae / Q000187:drug effects; D006801:Humans; D009268:Nalidixic Acid / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D014552:Urinary Tract Infections / Q000188:drug therapy*
D009268:Nalidixic Acid