Photomicrographs of kidney sections of DM group and DM plus VOO group (stained with PAS, × 400). Sections of kidney of DM treated rats (1A, 1B) showing enlarged and congested renal vein (asterisks), swelling of renal tubules (T), atrophied glomeruli (arrow) and dilatation of the bowman capsule (B), and pyknotic nuclei of renal epithelium (arrowheads). Sections of kidney of DM + VOO group (1C) showing mild dilation of the bowman capsule (B) and renal tubules (T), and focal nuclear pyknosis of renal epithelium (arrowheads).