title: Cause of seal die-off in 1988 is still under debate.
authors.forename: T J
authors.initials: TJ
authors.lastname: O'Shea
mesh_terms: D000818:Animals; D004785:Environmental Pollutants / Q000633:toxicity*; D007107:Immune System / Q000187:drug effects; D018185:Morbillivirus Infections / Q000453:epidemiology / Q000209:etiology / Q000401:mortality / Q000662:veterinary*; D011078:Polychlorinated Biphenyls / Q000633:toxicity*; D046048:Seals, Earless / Q000276:immunology / Q000821:virology
chemical_list: D004785:Environmental Pollutants; D011078:Polychlorinated Biphenyls