Figure 4: CD23 and CD27 expression analysis of CD19+ B-cells by flow cytometry. The upper panel shows the analysis of PBMCs isolated from patient 8A while the lower panel shows the analysis of the corresponding LCLs (LCL-8A). R3: gated CD27+ cells; R4: gated CD19+ B-cells; R5: gated CD19+CD23+; R6: gated CD23+CD27+ cells; R7: gated CD19+CD27+ cells; R8: gated CD19+CD23+CD27+ cells.