Testing for Tay-Sachs heterozygotes.
D000649:Amniocentesis; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis; D005865:Gestational Age; D006579:Heterozygote; D006801:Humans; D008064:Lipidoses / Q000175:diagnosis*; D011247:Pregnancy; D011296:Prenatal Diagnosis