Anti-urolithiatic activity of extracts of peel and pulp of Cucumis melo L. Serum creatinine levels (mg/dL) (A), serum uric acid levels (mg/dL) (B) and serum BUN levels (mg/dL) (C). White bars represent normal samples, green bars represent positive control and black bars represent negative control. * indicates p-values of ≤ 0.05.