产前诊断胎儿染色体的诸方法中,以孕早期绒毛直接法制备染色体较为理想,且已跃为优生学和预防医学的新方向。我室参考《全国绒毛制备染色体技术学习班资料》,于1985年6月12日至10月30日对51例早孕人流绒毛组织取样94份进行方法学探讨和改进,确立两种制备方法。并将10例盲吸绒毛染色体制片行G、C显带制备摸索,亦获得满意带纹。鉴此,产前诊断性别一 Among the methods for prenatal diagnosis of fetal chromosomes, chromosomal preparation by the villus direct method in early pregnancy is ideal and has become a new direction for eugenics and preventive medicine. Reference to the “National Chromosome Preparation Chromosome Technology Learning Class Materials”, I conducted a methodological study and improvement on 51 samples of early pregnancy human chorionic villus tissue from June 12 to October 30, 1985 to establish two preparation methods. And 10 cases of blind villus chromosome production line G, C banding preparation groping, but also get a satisfactory banding. In view of this, prenatal diagnosis of a sex