title: Plasmid-mediated resistance to nalidixic acid and new 4-quinolones?
mesh_terms: D000890:Anti-Infective Agents / Q000494:pharmacology*; D009268:Nalidixic Acid / Q000494:pharmacology*; D011804:Quinolines / Q000494:pharmacology*; D011815:R Factors
chemical_list: D000890:Anti-Infective Agents; D011804:Quinolines; D009268:Nalidixic Acid