| 释义 |
trisomy 21 释义 21三体 例句 1·If this is a patient with trisomy 21 , it become more complicated. 如果这病人是21三体,可能就复杂些。 2·Down syndrome (trisomy 21 ) is a disorder caused by the presence of an extra 21st chromosome. 唐氏综合症(21三体综合症)是由于患者额外多了一条21号染色体所致的疾病。 3·CONCLUSIONS: The extent to which free fetal DNA testing can be applied as a universal screening tool for trisomy 21 , 18, and 13 depends mainly on assay accuracy and cost. 结论:胎儿游离dna检测作为21三体、18三体和13三体的通用筛查工具的程度,主要取决于测定方法的准确性和成本。
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