Demonstration of foetal cells by chromosome analysis of maternal blood.
D000328:Adult; D002478:Cells, Cultured; D005260:Female; D005333:Fetus; D005865:Gestational Age; D006801:Humans; D008297:Male; D008431:Maternal-Fetal Exchange; D011247:Pregnancy; D012730:Sex Chromosomes; D012732:Sex Determination Analysis