近来,由于采用了高分辨超声和分子手段,使适于妊娠三个月产前诊断的绒毛取样技术得到了及时的发展.大量的研究工作表明绒毛组织适于遗传学、生物化学和DNA分析.由于可能存在取样来源上的错误,如母体细胞污染和胎儿-滋养层的差异,因此必须确定这一技术的准确性.本文旨在总结对85例绒毛诊断样品进行细胞遗传学分析的经 Recently, due to the use of high-resolution ultrasound and molecular techniques, the villus sampling technique suitable for prenatal diagnosis three months of pregnancy has been developed in time.Numerous studies have shown that villus tissue is suitable for genetics, biochemistry and DNA analysis. The accuracy of this technique has to be determined as there may be errors in sampling sources such as maternal cell contamination and fetal-trophoblast.This paper aims to summarize the results of a cytogenetic analysis of 85 villi diagnostic samples