Cytoprotective effect of TDE on hydrogen peroxide induced toxicity in clone 9 cells by LDH assays. LDH released in medium was assayed in (A) and LDH leakaged from cytosol was assayed in (B) after triton X-100 treatment. **p < 0.01; ***p < 0.001 versus hydrogen peroxide-treated cells. + p < 0.01 versus vit C group. Control group refers to cell free medium.