on the basis of the whole material analysis it was observed , however , that the more pregnancies with fetomaternal incompatibility the women had and the more severe the course of the hemolytic disease was in their babies , the more frequently the igg3 sublcass was present in the pattern of antibodies and the less frequent were the igg2 and igg4 subclasses .
C0003241
antibodies
C0020860
igg4