Illustration copyright 2000 by Nucleus Communications, Inc. All rights reserved. http://www.nucleusinc.com
The pineal gland is a small gland in the brain that makes melatonin, a hormone that helps regulate the sleep-wake cycle.
Current as of: July 26, 2016
Author: Healthwise Staff
Medical Review: Kathleen Romito, MD - Family Medicine & Alfred Lewy, MD, PhD - Psychiatry
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