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Due to the systemic activation of sympathetic activities, this circuit can also allow for timely responses to external light in other organs. It also highlights a function of ipRGCs in regulating autonomic nervous activity.<\/jats:p>","DOI":"10.1073\/pnas.1719548115","type":"journal-article","created":{"date-parts":[[2018,6,29]],"date-time":"2018-06-29T14:57:14Z","timestamp":1530284234000},"update-policy":"https:\/\/doi.org\/10.1073\/pnas.cm10313","source":"Crossref","is-referenced-by-count":84,"title":["External light activates hair follicle stem cells through eyes via an ipRGC\u2013SCN\u2013sympathetic neural pathway"],"prefix":"10.1073","volume":"115","author":[{"given":"Sabrina Mai-Yi","family":"Fan","sequence":"first","affiliation":[{"name":"Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, 100 Taipei, Taiwan;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5327-250X","authenticated-orcid":false,"given":"Yi-Ting","family":"Chang","sequence":"additional","affiliation":[{"name":"Department of Life Science, 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