Using flow cytometry, we quantified the co-expression of IL-10 and p-Elk-1 in specific cell subsets of PBMCs including CD3+ T cells, CD19+ B cells and CD14+ monocytes from healthy controls and SLE patients and showed representative data plotted in two-dimensional dot plots in Figure 4A. The gene discussed is ELK1; the disease is systemic lupus erythematosus.