Assertion: catalase's activity | /r/AtLocation | human graying hair follicles
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text: Although deficient antioxidant activity was reported in human graying hair follicles , , it remains to be determined whether an impaired antioxidant defense in gray hair follicles simultaneously affects mature hair bulb melanocytes and their immature precursor cells in the bulge region, which would have a critical implication for restoring pigmentation to the affected gray hair.