title: First-trimester prenatal diagnosis by trophoblast biopsy.
mesh_terms: D000755:Anemia, Sickle Cell / Q000175:diagnosis; D005260:Female; D006801:Humans; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011296:Prenatal Diagnosis / Q000379:methods*; D012732:Sex Determination Analysis; D013789:Thalassemia / Q000175:diagnosis; D014327:Trophoblasts / Q000032:analysis*