Melanopsin

Rarity: Common

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Notion

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Science and technology

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What Wikipedia says

Melanopsin is a type of photopigment belonging to a larger family of light-sensitive retinal proteins called opsins and encoded in humans by the gene OPN4.

Excerpt from the Wikipedia article “Melanopsin”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: National Center for Biotechnology Information, U.S. National Library of Medicine, Public domain, via Wikimedia Commons.