Fig. 2

Scores (a) and loadings (b) from the first two principal components (PC1 and PC2) obtained from principal component analysis using centred and standardised gut bacteria counts in faeces at baseline for N = 9 subjects in the Cod group, N = 13 subjects in the Salmon group, and N = 11 subjects in the Control group. The score plot (a) shows the experimental groups (blue diamond; Cod group, red squares; Salmon group, green triangles; Control group). The loading plot (b) show bacterial signals by phylum (open black circles; Actinobacteria, red squares, Bacteroidetes, orange circles; Firmicutes, blue diamond; Proteobacteria, green triangle; Verrucomicrobia)