NMR-Based Metabonomic Studies on Stomach Heat and Cold Syndromes and Intervention Effects of the Corresponding Formulas

Figure 3

Results of multivariate data analysis and validation based on ¹H NMR spectra of rat serum samples. (a–d) PLS-DA scores plots and (e–h) corresponding plots of permutation tests. (black square) Control group, (red plus) SH model group, and (blue triangle) SC model group. Permutation tests were carried out with 999 random permutations in PLS-DA models.

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