Correlation of T. bryosalmonae prevalence and antimicrobial genes in rainbow trout kidney. ( A ) iNOS; ( B ) Arginase-1; ( C ) Cathelicidin-1; ( D ) Cathelicidin-2; ( E ) Hepcidin-1; ( F ) LEAP-2A. 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).