title: The quinolones.
mesh_terms: D006090:Gram-Negative Bacteria / Q000187:drug effects; D006801:Humans; D009268:Nalidixic Acid / Q000031:analogs & derivatives* / Q000627:therapeutic use; D014552:Urinary Tract Infections / Q000188:drug therapy*
chemical_list: D009268:Nalidixic Acid