Objective to search the forming cause and the correlation between the clinical phenotype and chromosome band by the cytogenetic analysis on a case of ring chromosome 21 syndrome.
目的通过对1例21号环状染色体综合征患者的细胞遗传学分析，探讨21号环状染色体的形成原因，临床表型与染色体区带的关系。
The band Numbers increased with the increase in chromosome length.
随着染色体长度的增加，带纹数目也增加。
This study made the chromosome slides of Taihe Silkies by the peripheral blood lymphocyte culture-drying method, and analyzed Taihe Silkies karyotype and band pattern.
采用外周血淋巴细胞培养——空气干燥法，对泰和乌骨鸡染色体核型和带型进行了研究。
Some factors affecting the band formation were investigated and a practical procedure of C-banding of prometaphase chromosome was proposed.
还探讨了影响前中期C-分带制备的关键因素，提出了黄瓜前中期染色体C-分带的实用制备方法。
Some factors affecting the band formation were investigated and a practical procedure of C-banding of prometaphase chromosome was proposed.
还探讨了影响前中期C-分带制备的关键因素，提出了黄瓜前中期染色体C-分带的实用制备方法。
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