title: Chromosomes of human fetal lymphocytes: frequency of abnormalities and absence of maternal cells.
mesh_terms: D000028:Abortion, Induced; D002869:Chromosome Aberrations; D025063:Chromosome Disorders; D004171:Diploidy; D005260:Female; D005333:Fetus / Q000002:abnormalities*; D006801:Humans; D008214:Lymphocytes / Q000166:cytology*; D008297:Male; D008431:Maternal-Fetal Exchange; D010641:Phenotype; D011247:Pregnancy; D012729:Sex Chromosome Aberrations; D013997:Time Factors