Figure 5.

Fecal metabolomic analysis. (A) Principal component analysis (PCA). The distance of each coordinate point represented the degree of aggregation and dispersion between samples. A close distance indicated high similarity between the samples. PC1 and PC2 represented the contribution values of the first and second principal components, respectively. (B) OPLS-DA analysis displayed the grouped discrimination of the control and AM groups by the first two PCs. (C) OPLS-DA model validation. The abscissa representsed the replacement reservation degree of the replacement test. The ordinate represented the values of R² (green dot) and Q² (blue square), and the two dashed lines represented the regression lines of R² and Q² . QC, quality control.