PVR and infection: HSC3 cells after 24 h of infection were stained with anti-CD155(0.25 μg/mL), anti-Galg 9(100 μg/mL), anti-PDL-1(100 μg/mL), anti-CD73(200 μg/mL) and anti-CD39(100 μg/mL) (all BioLegend) for 30 min at 4 °C in the dark.