Definition: A dark brown to black pigment found in the skin, hair, and parts of the eye. Melanin is produced by cells called melanocytes and helps protect against the harmful effect of UV radiation.
Pronunciation: MEL-uh-nin - (noun)
Melanin
From Heather Brannon, MD, former About.com Guide
Updated October 23, 2004
About.com Health's Disease and Condition content is reviewed by the Medical Review Board
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