Figure 5: Histological changes of the kidneys (hematoxylin-eosin, X 100). A, Normal kidney structure in the normal control group. B, Normal kidney structure in the F. vulgaris group (150 mg/kg). Glomeruli with Bowman’s capsule and distal and proximal tubules are observed in a specific range. C, in the diabetic control group, increase in Bowman’s capsule space (black arrows), glomerular shrinkage (red arrow), and increase in the diameter of distal and proximal tubules (blue arrow) are found. D, Normal kidney structure in F. vulgaris plus streptozotocin group (150 mg/kg).