Figure 4 Photomicrographs of rat cerebral cortex sections: (a) normal control group showed no histopathological alterations. Sections of rat treated with LPS (b) showed congestion of cerebral blood vessel, necrosis, and pyknosis of neurons. Section of rat treated with DEX (c) showed necrosis and pyknosis of some neurons. MSCs-treated group showed normal histopathological appearance (d) (hematoxylin and eosin, ×400). DEX, dexamethasone; LPS, lipopolysaccharide; MSC, mesenchymal stem cell.