Protection of the developing foetus from immunological attack in Xiphophorus helleri.
D000818:Animals; D004624:Embryo Transfer; D005321:Extraembryonic Membranes / Q000276:immunology; D005260:Female; D005333:Fetus / Q000276:immunology*; D005399:Fishes / Q000276:immunology*; D010053:Ovary / Q000276:immunology; D011247:Pregnancy; D014184:Transplantation, Homologous