The decrepitude(aging) is the natural process of life sport, existing in any any period of life body, just under different circumstance its velocity and the degree have differentiation.Still be limited by some initial experiments and theory currently to the understanding of decrepitude this important topic, influence by theories, such as oxygen free radicals and cell 凋亡 ...etc. among them more profound.In recent years, a great deal of research certificate:Free radicals' ising a particularly live oxygen free radicals is one of the important factors which participates to regulate cell 凋 亡 , but someone think the death of decrepitude cell is a cell 凋 substantially 亡 [1].Inquiry into a research free radicals, the cell 凋亡 and the relativity of decrepitude, have important theories and actual meaning.
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