【摘要】 应用微铺展技术在扫描电镜下对人类染色体的高序结构进行了研究。观察了处于不同凝集水平的直径约为１００ｎｍ和２５０—３００ｎｍ的染色质纤维。分裂中期的染色体是由约３００ｎｍ直径的染色质纤维形成的。试验结果与染色体螺旋结构模型相似。更多还原

【Abstract】 The scanning electron microscopical study on higher order structure of human chromosome was made with modified surface microspreading technique.Chromatin fibres at different levels with about 100nm and 250-300nm in diameter were observed.Matephase chromosomes were organized from chromonema of about 300nm in diameter.The conclusion was similar to the Helial Coiling Mldel.更多还原