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. 2020 Jan 7;80:104177. doi: 10.1016/j.meegid.2020.104177

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Fig. 3 — Phylogenetic tree of the S1 gene fragment between potential recombination breakpoints 1 and 651 (a) and 652 and 1585 (b) among 241 IBVs included in the analysis. Sequences of Polish IBV strains are marked with bold underlined letters and recombinants with black dots. The tree was constructed using MEGA 7 using the maximum likelihood method based on the GTR + G + I model and 1000 bootstrap replicates (bootstrap values shown on the tree). To make the tree clearer visually, branches with IBV lineages only distantly correlated with studied Polish strains are collapsed.

Fig. 3 — Phylogenetic tree of the S1 gene fragment between potential recombination breakpoints 1 and 651 (a) and 652 and 1585 (b) among 241 IBVs included in the analysis. Sequences of Polish IBV strains are marked with bold underlined letters and recombinants with black dots. The tree was constructed using MEGA 7 using the maximum likelihood method based on the GTR + G + I model and 1000 bootstrap replicates (bootstrap values shown on the tree). To make the tree clearer visually, branches with IBV lineages only distantly correlated with studied Polish strains are collapsed.