The quantitative estimation of foetal erythrocytes in maternal blood.
D000328:Adult; D004906:Erythrocyte Count; D005260:Female; D005331:Fetomaternal Transfusion; D005333:Fetus; D006801:Humans; D008431:Maternal-Fetal Exchange; D011247:Pregnancy; D012440:Saccharomyces; D013997:Time Factors