*2.7. Statistics*

Expression statistical analyses for the mRNA were performed using a nonparametric, unpaired Kruskal–Wallis test with Dunn's multiple comparison correction, and protein secretion was statistically analyzed using an ordinary two-way analysis of variance ANOVA with Bonferroni's multiple comparisons test (GraphPad Prism 7; GraphPad Software Inc., San Diego, CA, USA).
