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Senescence - Editing
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Senescence is the constellation of deteriorative changes in structure and function of an organism, generally occurring after sexual maturation, which results in a progressive decline in the efficiency of homeostasis and in the success of the reaction to injury (<a href=http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1807695/>Sharpe, 1979</a>). The function of organs and tissues decreases form the age of 30 years by around 0.5 - 1.5% per year. This affects all organization levels of an human, from organs to molecules.
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