External Light Activates Hair Follicle Stem Cells Through Eyes Via an ipRGC–SCN–Sympathetic Neural Pathway

    June 2018 in “ Proceedings of the National Academy of Sciences of the United States of America ”
    Shih‐Kang Fan, Yu-Hao Chang, Chih-Lung Chen … Sung‐Jan Lin
    Studysummary This study found that light stimulation of intrinsically photosensitive retinal ganglion cells in the eyes can activate hair follicle stem cells through a neural circuit involving the sympathetic nervous system.
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