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从孕妇血中分离胎儿细胞是无创性产前诊断的一种确定方法 ,但由于母血中胎儿细胞数量极少 ,而且从母血中分离和富集胎儿细胞的技术不成熟 ,使它应用于临床有一定的困难。许多研究者一直致力于探索一种简便有效的无创性产前诊断方法 ,分子生物学技术的发展为分子分析提供了很多
Isolation of fetal cells from maternal blood is a definitive method for noninvasive prenatal diagnosis but due to the very small number of fetal cells in maternal blood and the immature technology of isolation and enrichment of fetal cells from maternal blood, There are some clinical difficulties. Many researchers have been dedicated to exploring a simple and effective noninvasive method of prenatal diagnosis. The development of molecular biology techniques has provided a great deal of molecular analysis