CD55 and infection: To confirm the expression of His6-tagged pFc, SPICE, DAF, and OmCI, Sf-9 cells were infected with recombinant BV-VSVG-ED-pFc, BV-VSVG-ED-SPICE, BV-VSVG-ED-DAF and BV-VSVG-ED-OmCI baculoviruses, respectively, harvested at 3 days after infection, and used for detection.