title: A simple alternative to amniocentesis for first trimester prenatal diagnosis.
mesh_terms: D001707:Biopsy, Needle / Q000295:instrumentation; D002478:Cells, Cultured; D002584:Cervix Uteri; D002824:Chorionic Villi; D002869:Chromosome Aberrations; D005260:Female; D005333:Fetus; D006801:Humans; D008214:Lymphocytes; D010920:Placenta / Q000166:cytology; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011296:Prenatal Diagnosis / Q000295:instrumentation / Q000379:methods*; D012732:Sex Determination Analysis; D014327:Trophoblasts