Aging alters the cell cycle control and mitogenic signaling responses of human hematopoietic stem cells

Abstract excerpt

Human hematopoietic stem cells (HSCs), like their counterparts in mice, comprise a functionally and molecularly heterogeneous population of cells throughout life that collectively maintain required outputs of mature blood cells under homeostatic conditions. In both species, an early developmental change in the HSC population involves a postnatal switch from a state in which most of these cells exist in a rapidly...

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