据一些研究表明控制细胞分裂次数的时钟是位于染色体两端的一种特殊的结构――端粒随着细胞分裂而变短癌细胞中存在延长染色体端粒的酶正常人的 Template




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tomski据一些研究表明控制细胞分裂次数的时钟是位于染色体两端的一种特殊的结构――端粒随着细胞分裂而变短癌细胞中存在延长染色体端粒的酶正常人的 coloring