Fig. 3

The process of DEGs screening. A Venn diagram of shared DEGs between OA, RA and NC. The yellow circle represents DEGs in NC and OA, the blue circle represents DEGs in health and RA, and the red circle represents DEGs in OA and RA. B Volcano plot of all DEGs between health and OA. C Volcano plot of all DEGs between health and RA. D Volcano plot of all DEGs between OA and RA. E Heatmap of DEGs. The row represents the expression of DEG, and the column represents the samples. The different color scale represents the different expression levels. F Before and after normalization of DEGs in three groups