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.
Costimulatory effect of Tat on IL-2 production in primary CD4+ T lymphocytes. The amount of IL-2 was evaluated after 16 h in both cell lysates (intracellular IL-2) and in the supernatant (extracellular IL-2) of cultures seeded on wells coated as indicated. Data are expressed as means ± SD of 4–9 separate experiments performed in triplicate.
