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The immune -endocrine responses in spring chinook salmon (Oncorhynchus tshawytscha) were examined during their freshwater migration and final maturation. In 1990, migrating fish had high plasma cortisol titres (means 200 ng ml -1 ) and generated relatively few antibody-producing cells (APC) from peripheral blood leukocytes (PBL) (100 -200 per culture). After three weeks acclimation in...
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