Cause of grey hair may be 'stuck' stem cells, study finds https://ift.tt/0Xtg3UO

A team led by researchers from NYU Grossman School of Medicine in the US focused on cells in the skin of mice and also found in humans called melanocyte stem cells, or McSCs. Hair color is controlled by whether nonfunctional but continually multiplying pools of McSCs within hair follicles get the signal to become mature cells that make the protein pigments responsible for color.

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