Fig. 4From: Exploring biomarkers associated with severity of knee osteoarthritis in Southern China using widely targeted metabolomicsIdentification of differentially expressed metabolites between mild and severe KOA. Xanthosine and N–acetyl-L-asparagine are metabolites associated with severe KOA. (A) The 12 differentially expressed metabolites ranked by log2 fold change (Log2 FC). (B) The 12 differentially expressed metabolites ranked by VIPBack to article page