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.
(a) Phylogenetic tree for the transfer regions from various sources. (b) Phylogenetic tree for the replication origins from different microorganisms. The trees were constructed by using the neighbor-joining method of Saitou and Nei and the Vector NTI program (InforMax). Using AlignX, we determined the calculated distance values (which are indicated in parentheses following the molecule designations on the trees).
