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. Author manuscript; available in PMC: 2021 Jan 1.
Published in final edited form as: Adv Exp Med Biol. 2020;1268:257–283. doi: 10.1007/978-3-030-46227-7_13

Fig. 13.1.

Fig. 13.1

Ultraviolet B as the double-edge sword in skin health

UVB not only induces skin cancers but also is necessary for phototransformation of 7DHC (7-dehydrocholesterol) to vitamin D3. BCC basal cell carcinoma, SCC invasive squamous cell carcinoma. (Reprinted from [208] with permission from Elsevier)