*2.9. Statistical Analysis*

Data were expressed as mean ± standard error of measurement (SEM) for the indicated number of experiments. The statistical significance of the di fference between groups was analyzed using independent sample *t*-tests or one-way analysis of variance (ANOVA) followed by Dunnett's post-hoc test. Statistical analysis was performed using SPSS software version 20.0 (IBM Co.; Armonk, NY, USA). For all tests, *p*-values below 0.05 were considered statistically significant.
