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为了探索癌基因的奥秘。笔者近日走访了浙江大学肿瘤研究所专家张苏展教授,了解到癌症的发生与常人鲜知的机体另一道防线——错配基因修复缺陷水平密切相关。人体细胞总是在以不同的速度进行分裂与复制着,更新一次少则需十多小时,多则要几天、甚至几十年。细胞分裂、突变启动后往往只需一瞬间,但准备工作却十分耗时、漫长。一般来说,肠、胃部位的细胞准备时间为6至10个小时,神经细胞则要几十年。人生活在
To explore the mysteries of oncogenes. Recently, the author visited Professor Zhang Suzhan, an expert at the Cancer Research Institute of Zhejiang University, and learned that the occurrence of cancer is closely related to the common line of defense known by the average person. Human cells are always dividing and replicating at different speeds. Updates take as many as ten hours or as many as several days or even decades. After cell division and mutation start, it usually takes only a moment, but the preparation work is very time-consuming and long. In general, the preparation time of the cells in the intestines and stomach is 6 to 10 hours, and the nerve cells are several decades. People live in