人类外周血淋巴细胞培养技术和显带方法的应用 ,使人们不仅可以根据带型鉴别每一条染色体 ,同时还能深入地研究染色体的形态、变异和畸变及其与表型或临床症状之间的关系。染色体的长短 ,在染色体结果的分析中起着重要作用 ,染色体越长其带型越丰富 ,随着染色体的逐步收缩变短 The application of human peripheral blood lymphocyte culture techniques and banding methods allows one to identify not only each chromosome based on the banding pattern but also the chromosome morphology, aberrations and aberrations and their relationship to phenotypes or clinical symptoms relationship. The length of the chromosome plays an important role in the analysis of chromosome results. The longer the chromosome is, the more its type is more abundant. As the chromosome shrinks gradually, it becomes shorter