title: Parathion causes secondary poisoning in a laughing gull breeding colony.
mesh_terms: D000375:Aging; D000818:Animals; D001717:Birds / Q000378:metabolism / Q000502:physiology*; D001921:Brain / Q000201:enzymology; D002802:Cholinesterases / Q000378:metabolism; D010278:Parathion / Q000506:poisoning*
chemical_list: D010278:Parathion; D002802:Cholinesterases