Figure 1From: Pathogenicity of reassortant H9 influenza viruses with different NA genes in mice and chickens Replication kinetics of influenza viruses in SPF ECE, MDCK and A549 cells. Growth dynamics of recombinant viruses in SPF ECE infected at a dose of 100 EID50, or in MDCK and A549 cells infected at an MOI of 0.01. The virus titers are presented by log10 mean ± SEM EID50/100 mg. **p < 0.01.Back to article page