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Phylogenetic analysis of seal influenza A(H10N7) virus NA gene segment. Nucleotide sequences of the NA genes of seal influenza A(H10N7) viruses were aligned with various closely related N7 sequences by ClustalW, and a phylogenetic tree was built using the maximum likelihood method and the GTR+G model (as determined by jModelTest2 [22]), with 1,000 bootstrap samples, in MEGA6 (14). Only bootstrap values of >70 are shown.
