Neuron
Volume 53, Issue 5, 1 March 2007, Pages 619-621
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Multiple Photopigments Entrain the Mammalian Circadian Oscillator

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Circadian rhythms are entrained to the natural day:night cycle. Melanopsin expressed in retinal ganglion cells partially accounts for circadian photoentrainment. Dkhissi-Benyahya et al. demonstrate that medium wavelength opsin (MW-opsin) also plays an important role in the process. Furthermore, they develop a model explaining wavelength-dependent photoentrainment by melanopsin and MW-opsin.

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