title: Loss of division potential in culture: aging or differentiation?
mesh_terms: D000302:Adrenal Cortex / Q000502:physiology; D000375:Aging; D002454:Cell Differentiation; D002455:Cell Division; D002478:Cells, Cultured; D005347:Fibroblasts / Q000502:physiology; D006801:Humans; D008017:Life Expectancy