Fig. 2From: Exploring biomarkers associated with severity of knee osteoarthritis in Southern China using widely targeted metabolomicsHeatmap presentation of 61 differential metabolites in the KOA group versus the control group.The horizontal axis shows 42 participants and the vertical axis shows 61 different metabolites. The numbers beginning with 3 are the control group, and the numbers beginning with 1 and 2 are the patient groupBack to article page