Figure 4.

Phylogenetic tree among dengue viruses generated by Neighbour - joining method based on the nucleotide sequence of partial prM gene. Each strain is abbreviated with first four letters of country of origin followed by last two digits of the year of isolation. Bootstrap values are indicated at the major branch points.

Dash et al. Virology Journal 2006 3:55   doi:10.1186/1743-422X-3-55
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