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Dev Cell. 2006 Apr;10(4):415-7.

Regulating quiescence: new insights into hematopoietic stem cell biology.

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  • 1Developmental and Stem Cell Biology Program, University of California, San Francisco, 94143, USA.


Blood-forming hematopoietic stem cells (HSCs) ensure production of all mature blood cells during homeostatic and regenerative hematopoiesis. Proliferation, cell cycle regulation, and quiescence are key processes involved in this function, and in a recent issue of Cancer Cell, show that HSC quiescence is actively regulated by specific molecular mechanisms that appear to distinguish normal HSC maintenance from HSC responses to hematologic injury.

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