http://wordsandunwords.com/ Words and Unwords (Words & Unwords) Where scientific and intelligent humor dominates en Serendipity 1.6 - http://www.s9y.org/ Tue, 26 Jul 2011 00:27:20 GMT http://wordsandunwords.com/templates/bulletproof/img/s9y_banner_small.png http://wordsandunwords.com/ 100 21 http://wordsandunwords.com/archives/445-This-Machines-Sleep-Is-Powered-By-Melatonin-Chemical-Molecule.html This Machine's Sleep Is Powered By Melatonin http://wordsandunwords.com/archives/445-This-Machines-Sleep-Is-Powered-By-Melatonin-Chemical-Molecule.html#comments http://wordsandunwords.com/wfwcomment.php?cid=445 0 http://wordsandunwords.com/rss.php?version=2.0&type=comments&cid=445 nospam@example.com (L. Chang) Know about melatonin? Melatonin is a naturally occurring compound found in animals, plants and microbes. In animals, circulating levels of the hormone melatonin vary in a daily cycle, and it is this variation in duration of melatonin production each day that allows this hormone to function as a seasonal/circadian rhythm clock. In humans, melatonin is produced by the pineal gland, located in the center of the brain but outside the blood-brain barrier. The melatonin signal forms part of the system that regulates the sleep-wake cycle by chemically causing drowsiness and lowering the body temperature. Showcase your wry chemical molecule attitude with any of these gifts featuring the melatonin chemical molecule along with the saying "This Machine's Sleep Is Powered By Melatonin". 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