title: Ruminations on an atavism.
mesh_terms: D001986:Bronchial Spasm / Q000175:diagnosis; D004487:Edema / Q000175:diagnosis; D006801:Humans; D006967:Hypersensitivity / Q000175:diagnosis*; D009093:Mucus / Q000378:metabolism; D012130:Respiratory Hypersensitivity / Q000175:diagnosis