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Difference in serum metabolome between control fish and probiotic-fed fish. (A) Hierarchical clustering showing patterns of serum metabolites. Red and green indicate high and low concentrations of metabolites, respectively. (B) PCA profiling of data from serum metabolome. (C) Phylogenetic tree displaying dissimilarity between control and probiotic-fed samples. (D) The number of serum metabolites in groups SerP > SerC, SerP ≈ SerC, and SerP < SerC.
