可进一步优化、完善，用于疾病的非创伤性产前诊断。
Further optimized, it could be applied for non-invasive prenatal diagnosis.
目的建立可靠有效的检测孕妇血浆胎儿dna的方法，探讨其在非创伤性产前诊断中的价值。
Objective to establish a reliable and effective method for detecting fetal DNA in maternal plasma and to explore its value in non-invasive prenatal diagnosis.
目的：本文旨在建立一种利用孕妇外周血中分选出的胎儿有核红细胞进行无创伤性产前诊断的有效方法。
Object: The purpose of this paper is to establish a effective method using fetal nucleated red blood cells form peripheral maternal blood for non-invasive prenatal diagnosis.
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