Fig. 3From: Enterovirus B types cause severe infection in infants aged 0–3 monthsNeighbor-joining tree of the partial VP1 gene of the EV-B strains in Guangzhou, China. The 44 EV-B strains obtained from infants aged 0–3 months and 5 EV-B strains obtained from children older than 3 months, in this study, are shown in red. Scale bar indicates the number of nucleotide substitutions per site. Bootstrap values were calculated on 1000 replicates. Phylogenetic nodes with bootstrap values over 80 are marked as purple linesBack to article page