Effect of pathological changes in brain cortex of mice with repeated cerebral ischemia-reperfusion (HE×400). a. Blank Group; b. Model Group; c. Nimodipine Group; d. Naoluotong Group; e. High-dose Spatholobus Grandiflprum Group; f. Mid-dose Spatholobus Grandiflprum Group; g. Low-dose Spatholobus Grandiflprum Group.