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自Simoni首创绒毛细胞染色体直接制备法以来,中期染色体的制备已成为产前诊断的常规技术之一,但对制备绒毛细胞高分辨染色体方法的报道极少。我们用溴化乙锭
Since the first generation of chorionic villosa cells directly prepared by Simoni, the preparation of metaphase chromosomes has become one of the routine techniques for prenatal diagnosis, but few reports have been reported on the methods for preparing high-resolution chorionic villi cells. We use ethidium bromide