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. Author manuscript; available in PMC: 2010 Oct 19.
Published in final edited form as: Physiol Behav. 2009 Jul 17;98(4):427–432. doi: 10.1016/j.physbeh.2009.07.007

Fig. 6.

Fig. 6

Quantification of Fos-positive cells in the paired SCN of BALB/cJ (open bars) and C57BL/6J mice (filled bars). Acute light exposure at ZT10 of the prior light-dark cycle yielded a significant increase in Fos-positive cells in BALB/cJ mice following a single-day 6-hr advance of the light-dark cycle, compared to similarly treated C57BL/6J mice. Few Fos-immunoreactive cells were observed in the SCN of either strain following a phase shift but no light pulse, or a light pulse without the single-day phase shift. (* p<.001, two-way ANOVA followed by Tukey analysis)