Figure 3

Expression of interferon alpha and ISG in different tissues of Atlantic salmon following injection and cohabitation challenge. IFN-α (A), Mx (B) and ISG-15 (C) gene expression measured at different times post challenge in injected fish. Mean values ± SEM relative to the mean of the control group (n = 9–10, except for muscle n = 3). Similar responses are presented in cohabitant fish, IFN-α (D), Mx (E) and ISG-15 (F) in the pancreas, heart and muscle tissues. Mean values ± SEM relative to the mean of the control group (n = 3–5). *p < 0.01, **p < 0.001.