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. 2015 Aug 12;5:13038. doi: 10.1038/srep13038

Figure 5. Biological characteristics of rescued wt and HN-mutated viruses.

Figure 5

(a) The relative expression of the NDV NP gene, HAd ability, NA activity, and fusion index were assessed for virus-infected BHK-21F cells (MOI of 1). All values are expressed relative to that for rG7-wt, which was set at 100%. Each bar represents the mean ± SD of three independent experiments (n = 3) (*P < 0.05, ***P < 0.001). (b) Representative syncytium formation induced by viral infection of BHK-21F cells. Monolayers were fixed with 4% paraformaldehyde and stained with Giemsa. Syncytia are indicated by black arrows.