Figure 5From: Differential replication properties among H9N2 avian influenza viruses of Eurasian origin Morphological changes of infected cells. Progression of infection and viral replication in MDCK-II cell at different time points of BVP01/H9N2 virus infection as observed by immunofluorescence assay (magnification 20×) using influenza A anti-NP antibodies. I: Infected cells positive for NP protein and M: Mock control negative for NP staining.Back to article page