Hair follicle stem cells and the collapse of self-tolerance in alopecia: the interplay of barrier function, the microbiome, and immunity

Abstract excerpt

The hair follicle is thought to be a site of ‘immune privilege,’ or relative protection from autoimmune and inflammatory responses. In particular, the long-lived, quiescent hair follicle stem cells (HFSCs) are strikingly resistant to cytotoxic immune effectors such as T cells and natural killer (NK) cells, even in systems where these cells are artificially directed to attack HFSCs. Nonetheless, many forms of...

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