Research Article

Metabolomics Reveals Distinct Metabolites between Lonicera japonica and Lonicera macranthoides Based on GC-MS

Figure 2

Multivariate statistical analysis of LJ and LM including PCA and OPLS-DA. (a) PCA score plot. (b) OPLS-DA score plot of LJ and LM. (c) The corresponding validation plots based on 200 times permutation tests of the OPLS-DA model. (d) S-plot screening of biomarkers.