INVITRO STIMULATION OF BOVINE PERIPHERAL-BLOOD LYMPHOCYTES - ANALYSIS OF VARIATION OF LYMPHOCYTE BLASTOGENIC RESPONSE IN NORMAL DAIRY-CATTLE

  • 1 January 1978
    • journal article
    • research article
    • Vol. 39  (6) , 1039-1042
Abstract
Lymphocyte immunostimulation tests were performed on 12 lactating dairy cows once every 2 wk for 1 yr. The greatest response of periphral blood lymphocytes to mitogens occurred in 4-6 yr old cows in Aug. and in cows at 2 mo. before the end of the gestation and again at 1 mo. after parturition. The least lymphocyte mitogenic response was shown in 7-9 yr old cows in Feb. or at parturition and 2-4 mo. after parturition. The magnitude of variations in lymphocyte blastogenic response was reported.