title: Fetal chromosome analysis after transcervical placental biopsies during early pregnancy.
mesh_terms: D000293:Adolescent; D000328:Adult; D001706:Biopsy; D002478:Cells, Cultured; D004724:Endoscopy; D005321:Extraembryonic Membranes / Q000166:cytology*; D005260:Female; D005333:Fetus / Q000166:cytology*; D005336:Fiber Optic Technology; D006801:Humans; D007621:Karyotyping; D008722:Methods; D010920:Placenta / Q000166:cytology*; D011247:Pregnancy; D012730:Sex Chromosomes