2.12 | Statistical analysis
All data are presented as the mean ± SEM. Statistical analyses were
performed using GraphPad Prism 8 software (San Diego, USA) and SPSS 20
(IBM, USA). Testing for normality and homogeneity of variance was
performed on the data from each group. If the data obeyed normal
distribution and had equal variance, comparisons between groups were
performed by one-way ANOVA. If equal variances were not assumed, the
Kruskal–Wallis H test was performed to compare variables among
groups. The Mann–Whitney test was used for intergroup
comparisons. P -value < 0.05 was considered
statistically significant.