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Summary
B‐lymphocyte populations and the in vitro antibody producing activity of lymphocytes were measured to evaluate the lymphocyte function of periparturiment dairy cows. Changes in Blymphocyte populations were not significantly different in cows during this period Significantly decreased numbers of plaque‐forming cells were observed in lymphocytes from cows at parturition and 3 days after parturition compared to those in lymphocytes obtained 14 days after parturition.
Notes
Department of Animal Health, School of Veterinary Medicine, Rakuno Gakuen University, Bunkyodai‐Midorimachi 586, Ebetsu, Hokkaido 069
Laboratory of Immunology, Faculty of Environmental Health, Azabu University, Sagamihara, Kanagawa 229, Japan