Maternal anti-Rh(D) and the D-negative fetus.
D005260:Female; D005333:Fetus / Q000276:immunology*; D006801:Humans; D011247:Pregnancy; D012203:Rh Isoimmunization; D012204:Rh-Hr Blood-Group System / Q000276:immunology*
D012204:Rh-Hr Blood-Group System