*3.14. Statistical Analysis*

All the results are presented as the mean ± SD, and the difference was considered significant at the *p* < 0.05 level. GraphPad Prism v5.0 (University of California San Diego, USA) was employed to analyze the data and draw plots. One-way analysis of variance (ANOVA) was used to determine the statistical significance of differences between means in SPSS13.0 (Chicago, IL, USA).
