Figure 5.

The relationship between the expression of BTLA/HVEM and certain members of the B7 superfamily in liver tissue sections from patients with HBV-related acute-on-chronic liver failure (HBV-ACLF). Immunofluorescence double staining indicated that several novel members of the B7 superfamily, including PD-L1, PD-L2, B7-H3 and B7-H4, were co-expressed with HVEM. The arrows indicate positive cells. The nuclei were stained with DAPI, and the scale bar indicates 20 μm.