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1·Methods 8227 serum AFP specimens were detected from prenatal screening gravidas by TRFIA.

方法对8227例产前孕妇进行血清afp的测定，方法用时间分辨免疫荧光分析法。

2·Prenatal Screening can be helpful to lower birth defect and improve the quality of the new born.

产前筛查有助于降低缺陷儿出生，提高出生人口质量。

3·Gestational diabetes is most often diagnosed through prenatal screening, rather than reported symptoms.

妊娠期糖尿病通常都是通过产前筛查而不是报告症状后被诊断出来的。

4·Gestational diabetes is most often diagnosed through prenatal screening rather than reported symptoms.

妊娠期糖尿病通常都是通过产前筛查诊断，而不是报告症状。

5·Objective To investigate the clinical value of fetal echocardiography in prenatal screening of congenital heart diseases.

目的探讨超声心动图在产前筛查胎儿先天性心脏病的临床价值。

6·Conclusion: the 3 maternal serum markers may become an effective method for prenatal screening of the important fatal defects.

结论以上3种生化指标联合检测为产前诊断严重胎儿缺陷的有效方法。

7·Conclusion: Combination of prenatal screening and diagnosis for birth defects is important to reduce the birth rate of birth defects.

结论出生缺陷的产前筛查结合产前诊断对降低出生缺陷的出生率有重要意义。

8·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，对2 1 -三体胎儿的筛查有重要的参考价值。

9·Objective: (1) To explore a technological system suitable for the Down 's syndrome prenatal screening in Yunnan province, using maternal serum markers.

目的：(1)用孕妇血清标记物进行唐氏综合征产前筛查，探索适合云南省实际情况的产前筛查技术体系。

10·Objective To investigate the incidence of Down's syndrome in live birth infants delivered in the hospital, and the effect of prenatal screening in reducing the incidence of Down's syndrome.

目的探讨住院分娩活产婴儿中唐氏综合征的发生率，以及产前筛查对降低唐氏综合征发生率的作用。