The different DNA methylation opens up a new way for noninvasive prenatal diagnosis and monitoring.
孕妇外周血中胎儿游离dna的发现，为无创性产前诊断开辟了一条新途径。
Noninvasive prenatal diagnosis has been greatly researched because of easily obtained peripheral blood samples of pregnant women.
近年来人们对利用孕妇外周血作非侵入性产前诊断(因其材料简便易获)的研究越来越多。
Noninvasive prenatal diagnosis has been greatly researched because of easily obtained peripheral blood samples of pregnant women.
近年来人们对利用孕妇外周血作非侵入性产前诊断(因其材料简便易获)的研究越来越多。
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