title: PCBs not to blame.
authors.forename: T J
authors.initials: TJ
authors.lastname: O'Shea
mesh_terms: D000818:Animals; D018104:Distemper Virus, Phocine; D004785:Environmental Pollutants / Q000032:analysis / Q000633:toxicity*; D005060:Europe; D018185:Morbillivirus Infections / Q000209:etiology / Q000401:mortality / Q000662:veterinary*; D011078:Polychlorinated Biphenyls / Q000032:analysis / Q000633:toxicity*; D046048:Seals, Earless
chemical_list: D004785:Environmental Pollutants; D011078:Polychlorinated Biphenyls