title: Four trials of antibiotics in patients with chronic mucopurulent bronchitis.
mesh_terms: D000667:Ampicillin / Q000627:therapeutic use*; D000900:Anti-Bacterial Agents / Q000627:therapeutic use*; D001991:Bronchitis / Q000188:drug therapy*; D002509:Cephaloridine / Q000627:therapeutic use; D002511:Cephalosporins / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D003707:Demeclocycline / Q000627:therapeutic use*; D004917:Erythromycin / Q000627:therapeutic use*; D006801:Humans; D008194:Lymecycline / Q000627:therapeutic use; D008690:Methacycline / Q000627:therapeutic use; D010406:Penicillins / Q000627:therapeutic use*; D013307:Streptomycin / Q000627:therapeutic use*; D013752:Tetracycline / Q000627:therapeutic use*
chemical_list: D000900:Anti-Bacterial Agents; D002511:Cephalosporins; D010406:Penicillins; D003707:Demeclocycline; D004917:Erythromycin; D000667:Ampicillin; D008194:Lymecycline; D013752:Tetracycline; D008690:Methacycline; D002509:Cephaloridine; D013307:Streptomycin