Figure 1.

Gating strategy and representative dot plots of CCR7 and PD-1 expression on CXCR5⁺CD4⁺ T cells from chronic HBV infected patients. (a) Living lymphocytes gate. (b) CD4⁺CD3⁺ cells gate. (c) CXCR5⁺CD4⁺CD3⁺ cells gate. (d) CCR7^loPD-1^hi Tfh cells gate and CCR7^hiPD-1^lo Tfh cells gate were set according the isotypes (e). At least approximately 100,000 events were analyzed in each sample.