The embryo as a transplant.
D000818:Animals; D004622:Embryo, Mammalian / Q000276:immunology*; D005260:Female; D006168:Guinea Pigs; D000882:Haplorhini; D006801:Humans; D007108:Immune Tolerance; D008251:Macaca; D008431:Maternal-Fetal Exchange; D011247:Pregnancy; D051381:Rats; D011919:Rats, Inbred Strains; D016038:Skin Transplantation; D014181:Transplantation Immunology; D014184:Transplantation, Homologous; D014327:Trophoblasts / Q000276:immunology; D014599:Uterus / Q000276:immunology