title: Bronchodilator effects of metaproterenol and oxtriphylline in asthma.
mesh_terms: D001249:Asthma / Q000188:drug therapy* / Q000503:physiopathology; D002794:Choline / Q000008:administration & dosage / Q000031:analogs & derivatives* / Q000627:therapeutic use; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D004359:Drug Therapy, Combination; D005541:Forced Expiratory Volume; D006801:Humans; D008448:Maximal Expiratory Flow Rate; D008450:Maximal Midexpiratory Flow Rate; D009921:Metaproterenol / Q000008:administration & dosage / Q000627:therapeutic use*; D013147:Spirometry; D013806:Theophylline / Q000008:administration & dosage / Q000031:analogs & derivatives* / Q000627:therapeutic use; D014797:Vital Capacity
chemical_list: D009921:Metaproterenol; D013806:Theophylline; D002794:Choline