Fig. 2.

Boxplots for log (S-IgA) (µg/g) in feces of mice sacrificed at the beginning (BLP), in the middle (MLP) or at the end (ELP) of the light period. Point c is significantly different from points a (p = 0.003) and b (p = 0.003), while points a and b are not significantly different (p = 1.000). ANOVA was applied to data and the differences between means were detected by Tukey’s post hoc test. Data were considered significantly different when p < 0.05