Transplacental passage of blood cells.
D000017:ABO Blood-Group System; D000818:Animals; D001775:Blood Circulation; D004912:Erythrocytes; D005260:Female; D005312:Fetal Blood; D006680:HLA Antigens; D006801:Humans; D007621:Karyotyping; D007962:Leukocytes; D008431:Maternal-Fetal Exchange; D051379:Mice; D008938:Mitosis; D011247:Pregnancy; D011248:Pregnancy Complications / Q000097:blood; D011261:Pregnancy Trimester, First; D011262:Pregnancy Trimester, Second; D011263:Pregnancy Trimester, Third; D012204:Rh-Hr Blood-Group System; D012730:Sex Chromosomes / Q000032:analysis; D014327:Trophoblasts / Q000276:immunology
D000017:ABO Blood-Group System; D006680:HLA Antigens; D012204:Rh-Hr Blood-Group System