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Figure 4 | BMC Research Notes

Figure 4

From: Virological investigation of four outbreaks of influenza B reassortants in the northern region of Taiwan from October 2006 to February 2007

Figure 4

Phylogenetic analysis of NA genes from influenza B virus isolates obtained between October 2006 and February 2007. Dendrogram of 37 influenza B strains and 23 GenBank reference strains is based on 251 nucleotides (33 to 283) of the NA gene (neighbor-joining method with DNASTAR distance measure program; MEGA, Version 3.0). The linear unrooted phylogenetic dendrograms present the B/Lee/40 sequence as an outgroup. Branch length indicates genetic distance according to indicated distance scale (0.01, 1% difference). Bootstrap analysis percentages (n = 1000) for each branch are indicated. The statistical p-values were labeled on each node (*P < 0.05 and **P < 0.01).

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BMC Research Notes

ISSN: 1756-0500

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