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"Washington, April 24, 2015: An extra three to four hours of sleep daily over as little as two days has been found to restore memories in fruit flies with Alzheimer's-like condition. The findings have implications for humans as according to the researchers brain mechanisms that control sleep in fr.."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.ap7am.com/english-news-10732-extra-sleep-may-help-restore-memory.html>