title: Protective effect of cromolyn sodium on bronchial challenge tests in pollen asthma.
mesh_terms: D000293:Adolescent; D000328:Adult; D000485:Allergens; D001249:Asthma / Q000175:diagnosis / Q000188:drug therapy* / Q000209:etiology; D002986:Clinical Trials as Topic; D004205:Cromolyn Sodium / Q000008:administration & dosage / Q000627:therapeutic use; D005260:Female; D006801:Humans; D008297:Male; D010919:Placebos; D006109:Poaceae; D011058:Pollen; D013147:Spirometry; D013997:Time Factors
chemical_list: D000485:Allergens; D010919:Placebos; D004205:Cromolyn Sodium