Dynamics of T-suppressor and T-helper lymphocytes and haemolytic plaque-forming cells during normal pregnancy in the sow.
T gamma and T mu lymphocytes and haemolytic plaque-forming cells (PFC) were quantitatively determined in peripheral blood and uterine draining lymph nodes ( DLN ) from 36 nonpregnant and 45 pregnant sows. A considerable increase in the number of T gamma cells occurred both in the blood and the DLN during pregnancy (P less than 0.001). This increase was higher at the beginning of pregnancy (20th-40th day) and lower at the end (80th- 110th day). No significant quantitative changes were found in T mu cells. During pregnancy there was a marked drop in the number of cells in the peripheral blood manifesting direct erythrocytolytic activity (DECA), as well as of haemolysin-producing cells.
D000818:Animals; D005260:Female; D006462:Hemolytic Plaque Technique; D007958:Leukocyte Count; D008198:Lymph Nodes / Q000166:cytology / Q000276:immunology*; D011247:Pregnancy; D011270:Pregnancy, Animal; D013552:Swine / Q000097:blood / Q000276:immunology*; D006377:T-Lymphocytes, Helper-Inducer / Q000276:immunology*; D050378:T-Lymphocytes, Regulatory / Q000276:immunology*