Correlation of T. bryosalmonae prevalence and inflammatory genes in rainbow trout kidney. ( A ) IL-1ß-1; ( B ) TNF-α1; ( C ) TNF-α2; ( D ) IL-6; ( E ) IL-11; ( F ) M17. Pearson correlation r coefficients are given relative to T. bryosalmonae RPL18 and kidney swelling (in parentheses). Significant correlations are shown in bold. *P < 0.05; **P < 0.01 (2-tailed).