title: In vitro emergence of Escherichia coli and Pseudomonas aeruginosa strains resistant to norfloxacin and nalidixic acid.
mesh_terms: D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000187:drug effects*; D009268:Nalidixic Acid / Q000031:analogs & derivatives* / Q000494:pharmacology*; D009643:Norfloxacin; D011550:Pseudomonas aeruginosa / Q000187:drug effects*
chemical_list: D009268:Nalidixic Acid; D009643:Norfloxacin