An official website of the United States government
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.
Peripheral blood CD4+ T-lymphocyte counts after intravenous SIVsm E660 challenge in Mamu-A*01+ rhesus monkeys immunized with the control (A) or the SIV gag (B) DNA vaccine.