Fig. 4

a Haemoglobin values measured in control fish (C, n = 50) and in S. chrysophrii-infected fish with a medium/low (M/L, n = 31) and high (H, n = 16) infection degree. b, c Normalised protein abundance values of alpha-2 globin (b) and beta-globin (c) measured by proteomics in plasma samples of C fish (n = 5) and in M/L (n = 10) and H (n = 5) infection groups. Values are presented as the mean ± SEM (standard error of the mean). Statistical differences among groups at P < 0.05 are noted with different letters (Kruskall-Wallis test)