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Phylogenetic dendrogram of the partial (690-bp) nucleotide sequence of the 3D RdRp gene of field kobuvirus strains (bold) compared with similar gene sequences for known kobuviruses and other picornaviruses in the GenBank database. The horizontal branch lengths are proportional to the genetic distance calculated by the neighbor-joining method. The evolutionary distances were computed using the Tamura-Nei method [36] and are in the units of base substitutions per site
