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Phylogenetic trees based on the RdRp domain analysis (the RdRps of the Baikal viruses are highlighted in red, known ICTV viruses are highlighted in bold). Clusters correspond to the following orders: (a) Picornavirales, (b) Tolivirales, (c) Nodamuvirales, (d) Durnavirales and (e) Sobelivirales. Scale bars are expressed in the number of amino acid substitutions per site.
