Figure 2
From: Molecular epidemiology of dengue viruses in southern China from 1978 to 2006
Neighbor-joining phylogenetic trees of 74 complete coding regions were conducted using Mega3.1 with the Kimura-2 parameter corrections of multiple substitutions. Bootstrap values (in percentage >65%) on each node were generated by using 1000 replications. The branch lengths are proportional to the number of nucleotide changes. All the Chinese isolates are in bold for clarity.