Fig. 3From: Co-infection of vvMDV with multiple subgroups of avian leukosis viruses in indigenous chicken flocks in ChinaIFA for identifying ALV isolation. IFA for DF1 cells infected with the isolates using monoclonal antibody 5D3 specific to ALV-p27. DF1 cells infected with ALV-K GD-K and ALV-A GD-A (a, b); uninfected DF1 cells served as a negative control (c)Back to article page