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Science Bulletins: Little Brain Gland Has Big-Time Effect

The function of the brain's pineal gland has long been a puzzle to scientists. Recently, researchers at the National Institute of Health's National Institute of Child Health and Human Development showed that it does far more than produce melatonin to regulate the body's sleep/wake cycle. It actually synchronizes 24-hour rhythms of activity for 600 genes that control basic body functions like immune system response, cholesterol production, and cell growth.
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