A–B, Proliferation of CD4+ and
CD8+ T cells from PB (A) and SF
(B) of HD, rRA and nrRA after stimulation in the absence or
presence of HVEM:Fc, PD-L1:Fc and their combination. C,
Proliferation index calculated according to data from A and B. D,
Frequency of CD8+ and CD4+ T cells from SF
producing the indicated effector cytokine. Statistical analysis:
Student’s paired T test (A–C) and Wilcoxon T test (D). n.s.:not
significant.