Additional file 4. List of up or down-regulated posterior intestine proteins of rainbow trout in response to Yersinia ruckeri strains at 3 dpe. Fold change was statistically analyzed in the posterior intestine of rainbow trout exposed to Y. ruckeri biotype 1 (CSF007-82) and biotype 2 (A7959–11) versus control posterior intestine rainbow trout samples (n = 3 per time point). * denotes statistically significant difference according to both ANOVA and post hoc Tukey’s HSD with FDR-adjusted p-value +2.