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Life

Body clock mechanics wins U.S. trio the Nobel Prize in physiology or medicine

diagram of biological clock

TIMEKEEPERS Three Americans have won the Nobel Prize in physiology or medicine for discovering the gears of circadian clocks and how they govern daily rhythms, such as sleep, metabolism and other body processes. 

Mattias Karlen/NobelPrize.org

By Tina Hesman Saey

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