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Phylogenetic tree based on the 16S rRNA gene sequences of H. somni and selected Pasteurellaceae members generated by MEGA 5.10. The tree was constructed by the neighbor-joining method, based on 1,000 bootstrapped data sets; distance values were calculated by using the Kimura 2 parameter model. The GenBank accession numbers, animal species, and country of origin of the sequences are given. The sequences derived from this study are highlighted within the boxes
