Progressive telomere shortening occurs in cultured rat microglia, but not astrocytes

Abstract excerpt

Normal somatic cells have a finite replicative capacity. With each cell division, telomeres shorten progressively until they reach a critical length, at which point the cells enter replicative senescence. Some cells maintain their telomeres by the action of the telomerase enzyme. Glia, particularly microglia, are the only adult cell types in the central nervous system (CNS) that exhibit a significant mitotic...

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