Allergic histological changes in the pregnant rabbit organs induced by injection of the globulin fractions from human placenta 1. Immuno-serological study on the globulin fractions extracted from human placenta

From the immunological study of the soluble protein fractions extracted from the normal human placenta as well as from the placenta in pregnancy toxemia, the author has clearly shown the presence of specific antigenic protein in these protein fractions which can not be found in the serum proteins of non-pregnant woman, and that this specific protein is contained only in the globulin fractions of placenta but not in the albumin ractions.