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. 2008 Dec 3;1:19. doi: 10.1186/1756-6606-1-19

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Copyright © 2008 Marston et al; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Circadian day-night profiles of c-Fos and orexin-A expression in the tuberal hypothalamus. The expression of c-Fos-ir was significantly higher during the subjective night (dark filled histograms) compared with the subjective day (gray filled histograms) in both the medial (A) and lateral (B) tuberal hypothalamus. Co-expression of c-Fos with OXA neurons showed a similar temporal relationship in medial (E) and lateral (F) tuberal hypothalamus. The numbers of OXA neurons did not vary from subjective day to night in either the medial (C) or lateral (D) tuberal hypothalamus. Histograms show mean ± SEM. ***p < 0.001.