Mucous secretions in the respiratory tract.
D001285:Atropine / Q000494:pharmacology; D002648:Child; D002908:Chronic Disease; D002923:Cilia / Q000502:physiology; D006801:Humans; D009092:Mucous Membrane / Q000166:cytology / Q000187:drug effects / Q000378:metabolism*; D009093:Mucus / Q000032:analysis; D012143:Respiratory Physiological Phenomena; D012212:Rheology
D001285:Atropine