ONSET OF HUMAN MATERNAL CELL-MEDIATED IMMUNE REACTION TO PLACENTAL ANTIGENS DURING THE FIRST PREGNANCY.

The macrophage migration inhibition techique was emplyed to study the debvelopment of human maternal cell-met\dilated immune reactions to plecental antigens during the firs pregnancy. Cell-mediated immune reaction to pooled antigens from five placentas could not be demonstrated during the first trimester, In the th month. peripheral blood leucocyte's from seven out of eight primigravidous women tested were ravtive t placental antigens, The one nonreactor became reactive by the th month. All of the primigravidous women tested during subsequent months were immune reactivity in the course of the first pregancy. [ABSTRACT FROM AUTHOR]