Interaction between inherent swimming performance and exercise training on disease resistance. Only those regimes included in the gene expression analysis are displayed. These reflect the lower (Medium), middle (Control) and higher (Long interval) mortalities found in response to IPN infection. Data is shown within poor (left) and good (right) swimmers. Though not significant, differences in mortalities were larger between poor and good swimmers for the Long interval, smaller for Control and minimum for the Medium intensity regime. Initial number of fish on the challenge ranged from 100 to 112 per regime.