In accordance with the comparatively weaker staining of ECTV-infected cells (Figure 1B), infection with the VV(WR):ΔHA-HA(ECTV)flag revertant virus reconstituted the staining by NKp30-Fc and NKp46-Fc less efficiently than VV(WR):ΔHA-HA(VV)flag, suggesting that HA from VV was more efficiently bound by soluble NCR than HA from ECTV. Here, NCR1 is linked to infection.