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. 2016 Feb 22;11(2):e0149608. doi: 10.1371/journal.pone.0149608

Fig 2. Phylogenetic trees from neighbor-joining analyses of the (a) HA genes, (b) NA genes, (c) PB1 genes, and (d) PB2 genes of the HPAI H5N1 study strains and reference strains available in the GenBank database.

Fig 2

The tree topology was constructed using the MEGA 6.06 program and bootstrap values were obtained from 1,000 resampled datasets. HPAI H5N1 virus clade names were determined based on specific criteria and reference strains, as described by the World Health Organization, World Organization for Animal Health, and Food and Agricultural Organization. The study strains are marked in bold and black squares.