title: Two different approaches to the investigation of bronchodilator drugs.
mesh_terms: D000328:Adult; D000336:Aerosols; D000402:Airway Obstruction / Q000139:chemically induced* / Q000188:drug therapy*; D000403:Airway Resistance / Q000187:drug effects*; D001249:Asthma / Q000188:drug therapy; D001993:Bronchodilator Agents / Q000008:administration & dosage / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D004305:Dose-Response Relationship, Drug; D006632:Histamine / Q000494:pharmacology; D006801:Humans; D008297:Male; D008722:Methods; D008875:Middle Aged
chemical_list: D000336:Aerosols; D001993:Bronchodilator Agents; D006632:Histamine