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Aβ plaque density expressed as percentage area of Aβ immunostaining in hippocampal subregions. *p < 0.05 versus sham group; †p < 0.05 versus rTBI72 group. Data represented are means ± standard error. Aβ, β-amyloid; CA1-SO, CA1 stratum oriens; CA1-DF, CA1 dendritic fields; DG, dentate gyrus; rTBI, repetitive mild TBI.
