Figure 5: Light micrographs showing caspase 3 immunohistochemical reactivity for hippocampus sections in all groups. Cells in the cornu ammonis region of the hippocampus were marked with the caspase 3 antibody, and those who showed a positive reaction were observed in brown. Black arrowheads point to cells stained with caspase 3 (+), while black arrows indicate cells that are not stained with caspase 3