H & E staining images of hippocampus in each group. Above: Figure a, b, c respectively represent 100-fold images of Sham operated Group, Model Group and MDP Group of Hippocampus, The parts in the box in image a-c are enlarged (400 fold) in the figures below (A, B, C), which represents the pathological changes of CA1 zone in three groups. Below: Figure A, B, C respectively represent 400-fold images of Sham operated Group, Model Group and MDP Group of Hippocampal CA1 Zone.