title: Antenatal search for fetal beta-thalassaemia in a twin pregnancy.
abstract: The antenatal search for fetal beta-thalassaemia in a twin pregnancy is described. Thalassaemia major was correctly excluded in both fetuses, and some of the problems of identifying patients at risk are outlined as well as those of obtaining fetal blood in the second trimester of pregnancy.
mesh_terms: D000328:Adult; D005260:Female; D005312:Fetal Blood / Q000032:analysis; D006441:Hemoglobin A / Q000032:analysis; D006801:Humans; D011247:Pregnancy; D011272:Pregnancy, Multiple; D011296:Prenatal Diagnosis / Q000379:methods*; D013789:Thalassemia / Q000175:diagnosis* / Q000235:genetics; D014427:Twins
chemical_list: D006441:Hemoglobin A