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

Figure 2 PD-1 expression levels in the total T cells in the immune clearance stage of chronic HBV infection and liver inflammatory groups. A: The dot plots showing the percentage of positive PD-1 in CD8+ T cells in high and low liver inflammatory groups; B: The dot plots showing the PD-1 MFI expression level in the total CD8+ T cells in high and low liver inflammatory groups; C: Positive correlation between PD-1 MFI expression and alanine aminotransferase (ALT) levels in CD8+ T cells; D: Positive PD-1 percentage and ALT level in CD8+ T cells.