title: On the action of combination bronchodilators.
mesh_terms: D000420:Albuterol / Q000627:therapeutic use; D000818:Animals; D001249:Asthma / Q000188:drug therapy*; D001993:Bronchodilator Agents / Q000494:pharmacology* / Q000627:therapeutic use; D004285:Dogs; D004338:Drug Combinations; D004357:Drug Synergism; D004809:Ephedrine / Q000627:therapeutic use; D006168:Guinea Pigs; D006801:Humans; D012129:Respiratory Function Tests; D013566:Sympathomimetics / Q000627:therapeutic use; D013806:Theophylline / Q000627:therapeutic use; D014970:Xanthines / Q000627:therapeutic use
chemical_list: D001993:Bronchodilator Agents; D004338:Drug Combinations; D013566:Sympathomimetics; D014970:Xanthines; D013806:Theophylline; D004809:Ephedrine; D000420:Albuterol