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人为什么会衰老和死亡?实验室里的研究已提供了老化机制的新线索。尽管返老还童仅存在于民间传说之中,但科学的方法至少能帮助人延年益寿。
Why do people age and die? Research in the lab has provided new clues about the mechanisms of aging. Although rejuvenation exists only in folklore, scientific approaches can at least help people live longer.