从孕妇外周血分离胎儿细胞进行产前诊断已取得了重要进展,但其临床应用中的问题仍需要进一步的研究,如富集胎儿细胞的最佳时间,影响因素,建立特异而敏感的基因、染色体分析方法,克服假阴性、假阳性问题等。只有解决好这些问题,这种方法才能成为理想的非创伤性产前诊断方法。
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