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近年来应用孕早期的绒毛组织作DNA分析,对某些遗传性疾病进行产前诊断,具有早期,快速、准确的优点。DNA 分析的第一步就是要从绒毛细胞中抽提NDA。本文以
In recent years, the application of early pregnancy villi DNA analysis for some genetic diseases for prenatal diagnosis, with early, rapid and accurate advantages. The first step in DNA analysis is to extract NDA from villus cells. This article