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Figure 4: Histopathological examination of the kidney. (a) Kidney section of normal rats which shows normal morphology of kidney tissues, (b) rat kidney section treated with ethylene glycol which shows the presence of calcium oxalate crystals with mild tubular injury and lymphocytic infiltration, (c) rat kidney section of Cystone (750 mg/kg) that shows similar morphology to normal rat kidney section and mild interstitial inflammation, (d) rat kidney treated with EEAS (250 mg/kg) which shows mild tubular injury and light congestion of blood vessels, (e) rat kidney treated with EEAS (500 mg/kg) that shows normal kidney tissue morphology and mild swelling of glomeruli

Figure 4: Histopathological examination of the kidney. (a) Kidney section of normal rats which shows normal morphology of kidney tissues, (b) rat kidney section treated with ethylene glycol which shows the presence of calcium oxalate crystals with mild tubular injury and lymphocytic infiltration, (c) rat kidney section of Cystone (750 mg/kg) that shows similar morphology to normal rat kidney section and mild interstitial inflammation, (d) rat kidney treated with EEAS (250 mg/kg) which shows mild tubular injury and light congestion of blood vessels, (e) rat kidney treated with EEAS (500 mg/kg) that shows normal kidney tissue morphology and mild swelling of glomeruli