Inhibition of lymphocyte stimulation by bovine uterine proteins

Inhibition of lymphocyte stimulation by bovine uterine proteins.

Lymphocyte-retrobulbar fibroblast interaction: mechanisms by which stimulation occurs and inhibition of stimulation.

Mechanisms by which lymphocytes stimulate glycosaminoglycans (GAG) production and glucose utilization by cultures of retrobulbar fibroblasts were investigated. Lymphocytes must be living or undergo at least one day of preincubation before freeze-thawihg to be active. Preliminary exposure of lymphocytes to phytohemagglutinin for one day inconsistently induced small increases in the lymphocyte po...

Frequency of Bovine Lymphocyte Antigen DRB3.2 Alleles in Sarabi Cows

Inhibition of lymphocyte proliferation by uterine fluid from the pregnant ewe.

Immunosuppressive molecules in uterine fluid from the nonpregnant uterine horn of unilaterally pregnant ewes at Days 60, 100, and 140 of gestation were examined. Uterine fluid from all days inhibited [3H]thymidine incorporation into phytohemagglutinin-stimulated lymphocytes. Inhibitory activity increased with advancing gestation. Uterine fluid also inhibited lymphocyte proliferation caused by o...

Inhibition of bovine T lymphocyte responses by extracts of the stomach worm Ostertagia ostertagi.

Lowered immune responses during bovine ostertagiosis have been reported in both in vivo and in vitro assay systems. In the present study we have employed three different life cycle stages of the nematode Ostertagia ostertagi to determine if products of this economically important parasite inhibit in vitro proliferation of Con A-stimulated cells from uninfected animals. We have demonstrated an i...