Addison, R.

baltic study harbour seals harbour herring level group response function baltic sea herring effect baltic group immunotoxic contaminants environ toxicol virus animal marine osterhau population marine mammals mammal harbour seal concentration a.d.m.e polychlorinated infection result organochlorine harbor seals epizootic immunotoxicity loveren laboratory food chain biphenyl health 157-169 atlantic health perspect blubber dewailly baltic sea toxicology free-ranging basis harbor compound ocean disease exposure laboratory animals species phoca adult immunotoxic effects rat pups lymphocyte laboratory rats difference contaminant reijnder dolphin intake nk cell activity europe contam activity t-lymphocyte ambio chain tanabe polychlorinated biphenyls 2 years proliferative p.j.h system dioxin antibody