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Fig. 3 | Arthritis Research & Therapy

Fig. 3

From: Cytokine profiling in active and quiescent SLE reveals distinct patient subpopulations

Fig. 3

Cytokine expression and cluster analysis of patients with systemic lupus erythematosus. a Correlation between the 10 cytokines: the 2 cytokines associated with active disease are shown in gold. The lines represent correlation with a p value <0.05. The thickness and colour of the lines show the strength of the Spearman correlation: red, r > 0.4; blue, r 0.21–0.4; grey, r < 0.2. b Scatterplot of the first two principal components (PC1 and PC2) showing three main groups. CXCL, chemokine (C-X-C motif) ligand; BLyS B, lymphocyte stimulator; IFNα, interferon alpha; PTX, pentraxin-related protein; MCP, monocyte chemotactic protein

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