Figure 4: Light micrograph of transverse semi-thin sections of rat sciatic nerves. (A): Control group, myelinated nerve fibers are in normal structure and morphology. (B): Diabetic group, nerves fibers show some abnormalitities such as myelin splitting (black arrow), and Edema (E). (C): The cerebrolysin-treated group, the proportion of nerve fibers with abnormalities was reduced. ×1000.