CD4 and systemic lupus erythematosus: When comparing SLE group and HC group, we identified 195 differentially expressed genes for platelets, 24 for dendritic cells, 13 for B cells, 367 for natural killer cells, 20 for FCGR3A+ monocytes, 86 for CD14+ monocytes, 14 for CD8+ T cells and 29 for CD4+ T cells (Supplementary Table S4).