(C, D) Analysis of microglia/macrophage activation using Iba1 immunohistochemistry from complete spinal cord sections at 1 mm interval. One-way ANOVA, Tukey's post hoc test. ** p<0.01, * p<0.05, ns not significant. Scale bar indicates 100 μm. F(5,12)=0.6974, p=0.6357; TG-Ova-(GA)10 vs. TG-PBS p= 0.0131; TG-(GA)15 vs. TG-PBS p=0.7650. TG-PBS vs. WT-PBS p=0.0018. 