Fig. 1From: The effect of PD-1/PD-L1 signaling axis on the interaction between CD19+B cells and CD4+T cells in peripheral blood of patients with systemic lupus erythematosusExpression of PD-L1, PD-1, and Ki-67 on CD4+TCs and CD19+BCs. (A-C) Flow and statistical plots of PD-L1 (A), PD-1 (B), and Ki-67 (C) expression frequency on peripheral blood CD4+TCs from SLE patients and HC. (D-F) Flow and statistical plots of PD-L1 (D), PD-1 (E), and Ki-67 (F) expression frequency on peripheral blood CD19+BCs from SLE patients and HC. ***P < 0.001, *P < 0.05Back to article page