Markers of inflammation expressed in the head kidney of Atlantic salmon injected with different oil-based vaccines. Quantitative real-time RT-PCR (qPCR) expression of genes identified as upregulated by microarray. FO-1 = A. salmonicida (sc); FO-2 = A. salmonicida (6 × sc); FO-7 = M. viscosa (sc); FO-8 = M. viscosa (6 × sc). Gene expression ratios normalized to Elongation factor 1α (EF1α). Error bars = standard error (SE), n= 7. *p < 0.05.