Prenatal screening for Down syndrome.
D000328:Adult; D000649:Amniocentesis; D004314:Down Syndrome / Q000175:diagnosis*; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D037841:Pregnant People; D011296:Prenatal Diagnosis; D018570:Risk Assessment; D000509:alpha-Fetoproteins / Q000032:analysis*
D000509:alpha-Fetoproteins