Serum Biomarkers for Chronic Renal Failure Screening and Mechanistic Understanding: A Global LC-MS-Based Metabolomics Research

Figure 1

Score plots of PCA, OPLS-DA, correlation analysis and permutation test for group RF vs HC. (a) and (b) are PCA score plots in positive and negative modes, respectively; (c) and (d) are OPLS-DA score plots in positive and negative modes, respectively; (e) and (f) are correlation analysis heat map in positive and negative modes, respectively; (g) and (h) are permutation tests of OPLS-DA in positive and negative modes, respectively.

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