A, B, C: Tracings of the hippocampus in series of slices (left) and representative photomicrographs (right) from control animals (A, n = 8), soman-exposed animals that received only ATS (0.5 mg/kg) and HI-6 at 1 min post-exposure (B, n = 8), and soman-exposed animals that received LY293558 (20 mg/kg) at 1 h after soman injection (C, n = 8). D: Group data showing the estimated volume of the hippocampus for all three groups, 30 days after the exposure. E: Group data showing the estimated volume of the hippocampus for all three groups, 90 days after the exposure. *p < 0.05 (ANOVA, LSD post-hoc test).