Fig. 4From: 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 erythematosusEffect of activated T cells on the expression of PD-L1 and PD-1 on CD19+BCs. (A-B) The plot of the effect of activated TCs on the expression of PD-L1 (A) and PD-1 (B) on the surface of CD19+BCs. ns: no statistical significance (P > 0.05), *P < 0.05, **P < 0.01Back to article page