Histological analysis of CA1, CA3, and CA4 hippocampal areas after injection of toxins Tb V-1, V-5, V-24, V-27, and V-28 isolated from Tityus bahiensis scorpion venom. “Ipsi” means the side of the injection and “contra” means the opposite area. Data are reported as mean ± SD of pyramidal neurons. Statistically significant changes within the control and experimental groups were evaluated by ANOVA followed by Tukey’s test. * denotes .