Cholangitis severity in K14-OVAp recipient mice on day 5 after adoptive transfer of OT-1wt or OT-1IL17ko CD8+ T cells: (A) mHAI histological activity index of H&E-stained liver sections and (B) levels of serum transaminases ASAT and ALAT. (C) Representative immunofluorescent staining of congenic cell marker CD45.1 (red, transferred T cells), CK19 (green, cholangiocytes) and nuclei (blue) performed on cryo-sections of K14-OVAp liver after adoptive cell transfer. Data are expressed as mean ± SD; n=10–17, representing pooled data from three independent experiments. Levels of significance: *p≤0,05; **p≤0,01; ***p≤0,001; ****p≤0,0001 (ordinary one-way ANOVA).