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quote:Originally posted by calcaneus.Embryo with its covering stuctures is geneticly unique foreign body. Immune reaction is not caused because of changed expression of MHC antigens from trophoblast cells.MHC antigens are superficial molecules. Identified by T-lymfocites, forein cells with MHC antigens are being destroyed.That is why trophoblast cells DO NOT produce MHC antigens.no MHC antigens > no foreign cells > no immune reaction
Started by thedoc