Figure 4
From: Differential replication properties among H9N2 avian influenza viruses of Eurasian origin
Detection of influenza virus H9N2 in infected cells. Confirmation of the presence of influenza BVP01/H9N2 virus at 32 hpi in MDCK-II cells observed by immunofluorescence assay (magnification 20×) using influenza A anti-NP antibodies. A: Infected cells positive for NP protein; B: Mock control negative for NP staining; C: Merge between NP and DAPI staining on infected cells and D: Mock control positive for DAPI staining.