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hTERT基因与肿瘤的研究进展 被引量:1

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摘要 端粒酶是一种核糖核蛋白复合物,能引起染色体的末端结构端粒的完全复制。端粒作为一种保护性结构,是由短的重复DNA序列组成。在人体中这种序列为TTA-GGG,其平均长度为5~15kb,细胞每经过一次分裂端粒缩短50-200bp,这种分子侵蚀作用使得细胞的分裂次数有了生理限制,从而限制了体细胞的寿命。一种逃避这种限制的机制是端粒酶的激活,因为端粒酶能弥补端粒的缩短。
作者 时念学
出处 《中国医药指南》 2008年第21期61-63,共3页 Guide of China Medicine
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参考文献17

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共引文献11

同被引文献22

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