[Prenatal diagnosis of beta-thalassemia using genetic engineering techniques].
D000649:Amniocentesis; D005260:Female; D006580:Genetic Carrier Screening; D005820:Genetic Testing / Q000379:methods*; D006720:Homozygote; D006801:Humans; D011247:Pregnancy; D011296:Prenatal Diagnosis / Q000379:methods*; D013789:Thalassemia / Q000175:diagnosis* / Q000235:genetics