Fig. 2

Unrooted phylogeneitc tree based on the 5′-UTR sequences. Phylogenetic tree of the 5′-UTR from eight BVDV positive samples was constructed by the neighbor-joining (NJ) method with the sequences published in GenBank. The nucleotide length of the 5′-UTR used for the analysis was 224 bp. The numbers at the phylogenetic branches indicated the bootstrap values (1000 replicates) in percentage supporting each group. The bar represented a genetic distance