Fig. 3From: CD4+ T cell exhaustion revealed by high PD-1 and LAG-3 expression and the loss of helper T cell function in chronic hepatitis BComparison of Th1 cytokine levels in PD1− and LAG-3−CD4+ T cells and in PD1+ and LAG-3+ CD4+ T cells. The proportions of IFN-γ, IL-2 and TNF-α-producing PD-1− LAG-3−CD4+ and PD-1+LAG-3+CD4+ T cells. ***P < 0.001Back to article page