Fig. 4

Levels of essential elements (A) chromium (Cr), (B) copper (Cu), (C) and iron (Fe) in brain cortex tissue before and after treatment. Results were expressed in mean S.D. The statistical analysis carried out in this study was the Kruskal–Wallis test, a one-way ANOVA, which was later followed by Fisher’s least significant difference test. p < 0.05 was considered significant. α p < 0.05 vs. control group, *p < 0.05 vs. BI group, BI: Brain Ischaemia, VPA: Sodium Valproate.