作者: Y M Dennis Lo , Nancy B Y Tsui , Rossa W K Chiu , Tze K Lau , Tse N Leung
DOI: 10.1038/NM1530
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摘要: … We previously reported the presence of cell-free fetal DNA in the plasma of pregnant … of fetal chromosomal copy number is not yet feasible 10 . An elevation in circulating fetal DNA …