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. 2016 Jul 7;7:1066. doi: 10.3389/fmicb.2016.01066

Figure 1.

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Figure 1

A phylogenetic tree based on the open reading frame sequences of the HA (A), NA (B), PB2 (C), PB1 (D), PA (E), NP (F), M (G), and NS (H) gene segments of two H7N1 AIVs. The two isolated H7N1 viruses are indicated by a closed circle and highlighted in purple. Human isolates are highlighted in red. Different lineages are highlighted in different colors. The trees were constructed using the neighbor-joining method of MEGA6.0 6 with 1000 bootstrap trials to assign confidence to the groupings.