Methods Chromosome specimens were prepared by short term culture of bone marrow cells and karyotype analyses were carried out using R and G banding techniques.
方法应用骨髓细胞短期培养法制备染色体标本，并应用R和G显带技术进行核型分析；
2
Methods: the chromosome were prepared with direct method, brief culture of cells and R-banding techniques, and the karyotypic analysis was performed on the base of complex classification.