Relative hippocampal levels of nuclear factor kappa b (NF-κB)-associated plasticity proteins in control and Cr-supplemented 3xTg mice. Representative Western blots depicting protein bands and relative protein levels, respectively, as measured by densitometry after normalizing to total protein (TP; Ponceau S staining or Stain-FreeTM for actin) and expressed as the percentage change from female control-fed mice (100% ± SD) of (A,B) calcium-calmodulin-dependent protein kinase II (CaMKII), (C,D) postsynaptic density protein 95 (PSD-95), (E,F) early growth response protein 2 (Egr2), and (G,H) actin. ANOVA: n = 3–5; * p < 0.05; ** p < 0.01.