Research Article

Serum Metabolites as Potential Biomarkers for Diagnosis of Knee Osteoarthritis

Figure 1

PCA (a) and PLS-DA (b) analysis based on serum UPLC-MS data showed clear tendency of separation in patients with OA and healthy controls. Further PLS-DA analysis within patients with OA showed stratification between mild and severe OA (c).
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(b)
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