IL-23 protein was quantified by ELISA (1x106 BMDCs/well) and by intracellular flow cytometry (IL-23p19+p40+ cells among live, single, CD45+, CD11c+ cells) in c-Junfl/fl and c-JunΔ/ΔMx1-Cre BMDCs stimulated with IMQ for 4h. (Left: n = 10-13; Right: n = 9-10; ≥ 3 independent experiments). Data information: Data are shown as mean ± SEM. P‐values were calculated by one-way ANOVA with Tukey multiple comparison test Statistical significance: ns > 0.05, *P < 0.05, **P < 0.01, ***P < 0.001, **** P < 0.0001. See Appendix Table S3 for exact P‐values. 