Additional file 3.

Maximum likelihood tree of RNA polymerase large subunit amino acid sequences. The tree is based on an alignment containing 66 amino acid residues with no gaps. Alignment and tree construction method is the same as those used for the tree in Fig. 1. HcDNAV and ASFV sequences (indicated by filled diamond marks) are grouped and supported by a bootstrap of 87%.

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Ogata et al. Virology Journal 2009 6:178   doi:10.1186/1743-422X-6-178