Figure 3.

Patterns of immunofluorescence reactivity in embryonic fibroblasts infected with ABBV-1. Embryonic fibroblasts from chicken (CEF), duck (DEF), and goose (GEF) were infected with ABBV-1 at a multiplicity of infection (MOI) = 5. Immunofluorescence for ABBV-1 antigen was conducted at 6 days post infection (dpi). Column of panels on the left shows ABBV-1 immunofluorescence; column of panels in the middle shows DAPI counterstain alone; and column of panels on the right shows the merged images. Each row of panels indicates a different species. Magnification, 63× for all panels.