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.
Unrooted phylogeny of retroviruses and foamy-like elements. The tree was inferred from reverse transcriptase (RT) protein alignment. The host information for FVs, EFVs, and exFVs is indicated using colors indicated in the key. The newly identified viral elements are labeled in red. The scale bar indicates the number of amino acid changes per site. Bootstrap values of <70% are not shown.
