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. Author manuscript; available in PMC: 2011 Feb 1.
Published in final edited form as: Brain Behav Immun. 2009 Oct 12;24(2):254. doi: 10.1016/j.bbi.2009.10.005

Fig. 2C.

Fig. 2C

E. coli treatment did not suppress conditioning-induced c-Fos gene expression in 24 mo animals. 3 mo and 24 mo animals were administered E. coli or vehicle i.p. 4 d post-treatment, animals underwent contextual fear conditioning or served as HCC. 30 min post-conditioning, hippocampal c-Fos was measured. Conditioning induced a robust increase in c-Fos expression compared to HCC (*** p < .001). E. Coli treatment had no effect on c-Fos expression. N = 6 - 8 animals/group.