Concept of the fetus as a transplant.
D005260:Female; D005333:Fetus; D006801:Humans; D010920:Placenta / Q000033:anatomy & histology; D011247:Pregnancy; D014181:Transplantation Immunology; D014182:Transplantation, Autologous; D014599:Uterus / Q000033:anatomy & histology