Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Phylogenetic tree of the genus Flavivirus, using amino acid sequence. The tree was constructed by the neighbor-joining method using MEGA. Each number at nodes is the percentage of 500 bootstrap replicates. Vertical length is arbitrary. Scale is percentage of amino acid distance.
