![](http://www.alamy.com/thumbs/6/EEE1638F-49F8-4D71-A7F7-FFEFB1ED08F3/2KFFP3M.jpg)
3D image of Vitamin D skeletal formula - molecular chemical structure of fat-soluble secosteroids isolated on white background
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Photo credit: © Kseniya-Omega / Alamy / Afripics
License: Royalty Free
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