Figure 1: a. Brain of control group showed normal tissue; b. Brain of group 2 showed congestion (arrow) and hemorrhage with perineuronal edema; c. Brainof group 3 showed sever hemorrhage (arrow); d. Brain of group 3 showed congestion (arrow) with perivascular and perineuronal edema; e. Brain of group 4 showed congestion (arrow) with perivascular and perineuronal edema, (H&E X200).