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不能维持代谢需要，使细胞萎缩或死亡。
交联学说 这个学说由鲁齐卡于 1924 年最早提出。此 学说认为，胶体异常的交联随年龄而增多，促使细胞丧失整体性。 细胞与组织中存在着大量发生交联反应的成份，因而容易发生多 种交联反应。交联反应是所有化学反应中的一种，在体内的生物
化学反应过程中，只要发生了极小量的交联干拢，就可以对机体
产生严重的损伤作用。 출장샵
联，影响细胞功能导致衰老。
출장 相传的现象。统计资料也表明，人的寿天有遗传因素的作用。科 学家推测，一个人的寿限，有一种预先计划好的信号，从亲代的 生殖细胞精子与卵子，带给子代。这种信号称“寿命基因”或“衰 老基四”，它存在于细胞核染色体 DNA 小段中。 출장안마 足，细胞就不易衰老。人体细胞一般分裂 출장샵 ，
似乎这种基因在起作用。
附2：延缓衰老的理论和实验研究概况
抗衰老研究，是目前医学生物领域中和保健科研机构中的一 个综合性的尖端课题。多少年来，世界上许多科学家正在从事多 种研究。研究的目的在于弄清衰老的生理机制，取得预防衰老的
方法和措施。下面简单概述一下这方面的研究情况。
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