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The process of aging is a hallmark of the natural life span of all organisms and individuals within a population show variability in the measures of age related performance. Longevity and the rate of aging are influenced by several factors such as genetics, nutrition, stress, and environment. Many studies have focused on the genes that impact aging and there is increasing evidence that epigenetic...
Polycomb group (PcG) proteins regulate and maintain expression pattern of genes set early during development. Although originally isolated as regulators of homeotic genes, PcG members play a key role in epigenetic mechanisms that maintain the expression state of a large number of genes. All members of the two polycomb repressive complexes (PRC1 and PRC2) are conserved during evolution and while invertebrates...
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