Fig. 5. Multivariate analyses of serum ¹H NMR spectra data at the end of the 23^rd day. (A) PCA score plot of the control (green) and KYDS model groups (blue) (R²X = 0.97, Q² = 0.846) a; and (A1) a 3D plot of OPLS-DA, based on serum metabolites discriminating the control and KYDS model groups (R²X = 0.772, R²Y = 0.987, Q² = 0.65). (B) PCA score plot of the KYDS model group (blue) and YGP group (red) (R²X = 0.975, Q² = 0.584); and (B1) a 3D plot of OPLS-DA based on serum metabolites discriminating the KYDS model group and YGP group (R²X = 0.787, R²Y = 0.995, Q² = 0.809). (C) PCA score plot of serum results from the three groups (R²X = 0.793, Q² = 0.606).