Binding of PILRα to the cell surface molecule(s) in HSV-1-, HSV-2-, or PRV-infected cells. HEK293T cells were mock infected or infected with wild-type HSV-1(F), HSV-2 186, or PRV at an MOI of 5. At 12 h after infection, infected cells were stained with PILRα-Ig fusion protein and analyzed by flow cytometry.