title: Origin of phosphatidylcholine in tracheal lavage fluid.
mesh_terms: D000818:Animals; D001826:Body Fluids / Q000032:analysis; D008168:Lung / Q000032:analysis; D008297:Male; D010713:Phosphatidylcholines / Q000032:analysis*; D051381:Rats; D007507:Therapeutic Irrigation; D014132:Trachea / Q000032:analysis*
chemical_list: D010713:Phosphatidylcholines