Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

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.

View full-text article in PMC

. 2011 Mar 11;6(3):e17605. doi: 10.1371/journal.pone.0017605

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

Yu et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

PMC Copyright notice

The V3 region and CHR sequences of the different CRFs and subtype B′ were highly polymorphic, compared to the B′ subtype. The NHR sequences were relatively conserved. HXB2-LAI-IIIB-BRU (Acc K03455), CN.97, C54, CN.97.97CNGX_6F, CM240_ACC_U54772 and RL42 were used as reference sequences.