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Morphological changes of hippocampal CA1 by HE staining (×200). (A) Sham group: the cells arranged neatly, cellular structure was complete with a large and round nucleus and clear nucleolus (arrow). (B) MCAO group: nerve cells become triangular or irregular, with concentrated cytoplasm and nucleus (arrow). (C) D+MCAO group: the damages in the shape and arrangement of cells (arrow) were much better than MCAO group.
