title: Histamine and metacholine challenge in the testing of bronchial reactivity.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001249:Asthma / Q000503:physiopathology; D001980:Bronchi / Q000187:drug effects* / Q000502:physiology / Q000503:physiopathology; D001991:Bronchitis / Q000503:physiopathology; D005260:Female; D006632:Histamine / Q000494:pharmacology*; D006801:Humans; D006967:Hypersensitivity / Q000503:physiopathology; D008297:Male; D008688:Methacholine Compounds / Q000494:pharmacology*; D008875:Middle Aged; D009119:Muscle Contraction / Q000187:drug effects*; D009130:Muscle, Smooth / Q000187:drug effects; D005082:Physical Exertion; D012129:Respiratory Function Tests; D013268:Stimulation, Chemical; D014397:Tuberculosis, Pulmonary / Q000503:physiopathology
chemical_list: D008688:Methacholine Compounds; D006632:Histamine