Fetal cells in the blood of pregnant mothers.
D002478:Cells, Cultured; D002877:Chromosomes, Human / Q000648:ultrastructure; D005260:Female; D005333:Fetus / Q000166:cytology*; D006801:Humans; D007621:Karyotyping; D008214:Lymphocytes / Q000648:ultrastructure*; D008297:Male; D008431:Maternal-Fetal Exchange; D011247:Pregnancy