FIGURE 1.

Multivariate analysis and cluster analysis of all metabolites in cecal contents from the CON and SUS groups. (A) The scatter plot of principal component analysis (PCA). (B) The scatter plot of partial least squares discriminant analysis (PLS-DA); The accuracy, goodness-of-fit (R²) and goodness-of-prediction (Q²) were 1.0, 0.995 and 0.624, respectively. (C) The scatter plot of orthogonal projections to latent structures-discriminant analysis (OPLS-DA); R²X, R²Y, and Q² were 0.099, 0.875, and 0.448, respectively. (D) The hierarchical clustering based on the Euclidean distance and Ward clustering algorithm.