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Disrupted Daily Rhythms Hinder Fertility in Mice

Scientific American,  May 23, 2012

A new study published May 23 in PLoS ONE indicates that another clock may also be important for females trying to conceive: the one that regulates our waking and sleeping cycles. A strong body of evidence links daily wake-sleep cycles to feminine reproductive cycles. When scientists remove a female mouse’s suprachiasmatic nucleus—the pacemaker in her brain that regulates daily circadian rhythms—her estrous cycle ceases, and she becomes infertile.

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