IODs of viral factories of wild-type ASFV-Georgia 2007, culture-adapted ASFV-BA71V, and VV. Below is the representative image of step measurements for VV viral factories measured by image cytophotometry, as described above for Fig. 1. Scale bar = 5 µm. Abbreviations: IOD, Integrated Optical Density; ASFV, African swine fever virus; VV, Vaccinia virus.