title: Follow-up studies in subjects with airway tract sensitive to acetylcholine.
mesh_terms: D000109:Acetylcholine / Q000008:administration & dosage / Q000009:adverse effects*; D000328:Adult; D000397:Air Pollution; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D012130:Respiratory Hypersensitivity / Q000209:etiology*; D012137:Respiratory System / Q000187:drug effects; D012907:Smoking / Q000150:complications
chemical_list: D000109:Acetylcholine