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 analysis of the nucleotide sequences of the P and C genes of orthohepadnaviruses. Host taxa and phylogenetic groups are indicated. Bootstrap values (> 70%) are shown at relevant nodes. The trees were mid-point rooted for clarity only. The scale bar depicts the number of nucleotide substitutions per site.
