title: Prenatal diagnosis of Down syndrome in one of dizygotic twins.
mesh_terms: D000328:Adult; D004200:Diseases in Twins; D004314:Down Syndrome / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008297:Male; D011247:Pregnancy; D011296:Prenatal Diagnosis; D014429:Twins, Dizygotic