Prenatal diagnosis of chromosome abnormality.
D000649:Amniocentesis; D002478:Cells, Cultured; D002490:Central Nervous System / Q000002:abnormalities; D002869:Chromosome Aberrations / Q000175:diagnosis*; D025063:Chromosome Disorders; D004314:Down Syndrome / Q000235:genetics; D004358:Drug Therapy; D004992:Ethics, Medical; D005260:Female; D006801:Humans; D008423:Maternal Age; D009030:Mosaicism; D011123:Polyploidy; D011247:Pregnancy; D011878:Radiotherapy; D012732:Sex Determination Analysis; D014178:Translocation, Genetic