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.
The tree was constructed with MEGA5, using the Kimura-2 parameter model and bootstrap method with 1,000 replicates. Only values above 70% are shown. JL2005 and JL2006 are assigned the symbol •. Besides subtype P as the outlier, only CRF61_BC reference sequences and detected HIV-1 subtypes in Jilin (Figure 1) are included.
