用孕早期绒毛滋养层细胞直接制备染色体的方法,为孕早期产前诊断开辟了广阔的前景。为了对绒毛细胞染色体进行更细微的分析,我们从1986年1月开始对直接制备绒毛细胞染色体技术进行了改进,现报告如下。材料来源取经宫颈盲吸或人工流产的绒毛组织10mg,孕龄为6～10周。染色体制备方法在本室原方法的基础上作以下改进:(1) 将漂洗后的绒毛直接投入1%枸椽酸 The method of directly preparing chromosomes with trophoblast cells in early pregnancy provides a bright prospect for prenatal diagnosis in early pregnancy. In order to carry out a more detailed analysis of chorionic chromosomes, we started from January 1986 on direct preparation of chorionic chromosome technology has been improved, are as follows. Source of material taken by cervical blind suction or artificial abortion villus tissue 10mg, gestational age of 6 to 10 weeks. Chromosome preparation methods in the room on the basis of the original method for the following improvements: (1) the rinsed fluff directly into 1% citric acid