Figure 4.
Orthogonal partial least squares-discriminant analysis score plots of samples (left panel) and TICs (right panel) obtained from different groups: (A) C-9 (green dots) VS P-9 (red dots); (B) C-9 (green dots) VS M-9 (bule dots); (C) P-9 (red dots) VS M-9 (bule dots); (D) C-24 (green dots) VS P-24 (red dots); (E) C-24 (green dots) VS M-24 (bule dots); (F) P-24 (red dots) VS M-24 (bule dots). The color bar on the right corresponds to the intensity of samples, beginning from weak (blue) to strong (red).