Mouse Study Reveals How Hair Begins Graying.

Mouse Study Reveals How Hair Begins Graying.

HealthDay (6/16, Dallas) reported that the roots of gray hair "may lie in a particular type of communication between hair follicles and melanocyte stem cells, the cells that make and store the pigments in skin and hair," according to a lab study published in the journal Cell. Using mouse models, the researchers determined that the "lack of Wnt activation in melanocyte stem cells leads to de-pigmented, or gray hair." They also found that "abnormal Wnt signaling in hair follicle stem cells prevents hair re-growth."

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