Porcine fetal antibodies to maternal granulocytes and lymphocytes.

Immunological tests were used to determine the presence of antibodies to maternal lymphocytes and granulocytes in the blood serum of porcine fetuses and 4-week-old young. Enzyme-linked immunosorbent assay showed that the presence of these antibodies in fetal blood was an exception. No cross-reactions of these sera with porcine reproductive tract antigens were demonstrated.