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Brain Res. 1982 Jan 28;232(1):200-5.

Species difference in circadian [14C]2-deoxyglucose uptake by suprachiasmatic nuclei.


Hamsters exhibited a circadian variation in metabolic activity determined by [14C]2-deoxyglucose uptake in the suprachiasmatic nuclei, as has been previously reported for rats. The 13-line ground squirrel, a diurnal rodent, did not show a circadian variation in metabolic activity. The data are consistent with the hypothesis that there is a basic difference in the functional organization of the suprachiasmatic nuclei in nocturnal and diurnal animals.

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