[Prenatal investigation in familial Down's syndrome].
D000650:Amnion / Q000166:cytology*; D002869:Chromosome Aberrations; D004314:Down Syndrome / Q000175:diagnosis / Q000235:genetics*; D005260:Female; D006801:Humans; D007621:Karyotyping; D008297:Male; D011247:Pregnancy
Praenatal undersøgelse ved familiaert Down's syndrom.