绒毛滋养叶细胞有较高的自发分裂趋势,而且与胎儿的遗传基础是一致的。本文通过盲吸法取得孕早期绒毛组织直接制备染色体,供产前诊断分析。实践证明,本方法稳定可靠、简便易行。通过一系列实验,获得了良好的显带技术。在短期培养的绒毛标本中还建立了染色体高分辨显带方法。 Villous trophoblast cells have a higher tendency to spontaneous cleavage and are consistent with the fetal genetic basis. In this paper, the first trimester chorionic villi tissue obtained by blind suction directly prepared chromosome for prenatal diagnosis and analysis. Practice has proved that this method is stable and reliable, simple and easy. Through a series of experiments, a good banding technique was obtained. Short-term cultured villus specimens also established a high-resolution chromosome banding method.