title: Bronchial reactivity in occupational asthma and bronchitis.
mesh_terms: D001249:Asthma / Q000209:etiology*; D001980:Bronchi / Q000294:innervation; D001986:Bronchial Spasm / Q000209:etiology; D001991:Bronchitis / Q000209:etiology*; D006801:Humans; D009784:Occupational Diseases / Q000209:etiology*; D012130:Respiratory Hypersensitivity / Q000209:etiology*