• Conclusion: The ultrasonographic measurement data of nt have an important reference value in prenatal screening of fetal 21-trisomy syndrome.

    结论超声测量胎儿nt值,2 1 -三体胎儿筛查重要参考价值

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  • The detection rate of the chromosomal abnormality of the abnormal fetus detected by ultrasound (33.33%) was higer than the trisomy 21 high risk group(4.54%) and abnormal delivery group(9.09%)(P<0.05).

    其中超声胎儿异常染色体异常检出率(33.33%)明显高于21-三体高风险(4.54%)、不良孕产史组的检出率(9.09%)(P<0.05)。

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  • Materials and Methods: Cerebral ct findings in 23 cases with 21 trisomy syndrome, proved by cytogenetics, were retrospectively analyzed.

    材料方法回顾性分析23细胞遗传学检查证实21三体综合征脑部ct表现。

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  • Objective: a few trisomy 21 cells in normal chromosome karyotype was been observed for study of the correlation of clinical phenotype and development damage in sick children of Down's syndrome.

    目的观察正常细胞核型含有极少量21 -体细胞患儿临床表型发育损害相关关系

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  • 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13三体的通用筛查工具程度主要取决于测定方法准确性和成本。

    youdao

  • If this is a patient with trisomy 21, it become more complicated.

    如果病人21三体,可能复杂些。

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  • 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)由于患者额外多一条21号染色体所致疾病

    youdao

  • 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)由于患者额外多一条21号染色体所致疾病

    youdao

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