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Stem cells are capable of some incredible things. Some can transition between the various growth compartments present in hair follicles, while others can change into any type of cell in the body. According to a recent study, stem cells that migrate in hair follicles may become immobile as we age. As a result, these cells have trouble maturing and hair color maintenance becomes more challenging. The results were published in Nature.The hair germ compartment must contain hair-coloring stem cells (at left, in pink) in order for them to be activated (at right) and develop into pigment.

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