Fig. 2

Histological picture of brain lesions. a, b Inflammatory infiltration, spongy and perivascular edema, areas of necrosis, desquamation of the endothelium in the cerebral vessels. ×200. c Fibrinoid necrosis of cerebral vessels. H&E staining. ×100. d AHNE with the formation of a cyst. H&E staining. ×200. e Severe necrobiotic neuronal damage. Nissl staining. ×400