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. 2019 Sep 25;9:13880. doi: 10.1038/s41598-019-50413-8

Figure 1.

Figure 1

Score plots from PCA and OPLS-DA analysis. PCA score plot (−) ESI mode for normal vs. Grade 2 R (A); PCA score plot (−) ESI mode for normal vs. Grade 3 R (B); OPLS-DA score plot (−) ESI mode for normal vs. Grade 2 R (C); OPLS-DA score plot (−) ESI mode for normal vs. Grade 3 R (D).