title: Respiratory mucus: structure, metabolism and control of secretion.
mesh_terms: D000818:Animals; D002415:Cats; D006801:Humans; D007509:Irritants / Q000494:pharmacology; D009093:Mucus / Q000378:metabolism / Q000502:physiology*; D010275:Parasympathetic Nervous System / Q000502:physiology; D012018:Reflex; D012143:Respiratory Physiological Phenomena; D012137:Respiratory System / Q000294:innervation; D013045:Species Specificity; D013564:Sympathetic Nervous System / Q000502:physiology; D014132:Trachea / Q000502:physiology
chemical_list: D007509:Irritants