Natural course of chronic hepatitis B is characterized by changing patterns of programmed death type-1 of CD8-positive T cells

Figure 1 Programmed death type-1 (PD-1) expression in total peripheral CD8+ T cells in the natural stages of chronic hepatitis B virus (HBV) infection. A: The dot plots showing the percentage of PD-1+ CD8+ T cells in different natural stages of chronic HBV infection patients and normal controls and the horizontal bars indicating the median percentage of positive PD-1 in CD8+ T cells; B: The dot plots showing the PD-1 mean fluorescence intensity (MFI) expression in total CD8+ T cells, and the horizontal bars indicating the median PD-1 MFI expression level in CD8+ T cells. NC: Normal control.