Regeneration of Hair Follicle Transected In Vitro and the Location of Hair Follicle Stem Cells

    January 2003 in “ Journal of the Fourth Military Medical University ”
    Tang Jian
    TLDR Hair follicles can regenerate if cut at certain points, with stem cells in the upper part.
    The study aimed to investigate the regenerative conditions of transected hair follicles and locate hair follicle stem cells. It was found that when hair follicles were transected at the hair bulb or the lower 1/3 extremity, a new hair bulb-like structure formed, and the follicles continued to grow with growth rates of 75% and 70%, respectively. However, only 12.5% of follicles continued to grow when transected at their lower halves, indicating a significantly lower growth rate. The study concluded that hair follicles could regenerate when transected at specific sites, and hair follicle stem cells were located in the upper portion of the hair follicles.
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