title: Prenatal diagnosis at 6 weeks.
mesh_terms: D000328:Adult; D002824:Chorionic Villi / Q000032:analysis; D004247:DNA / Q000032:analysis; D005260:Female; D006801:Humans; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011296:Prenatal Diagnosis / Q000379:methods*; D013789:Thalassemia / Q000175:diagnosis*; D014463:Ultrasonography
chemical_list: D004247:DNA