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.
Proliferation of CD4+ T cells from wild-type (WT), CD28–/–, and CD28/CTLA4–/– mice in the presence of wild-type APCs. (a) Primary stimulation of CD4+ T cells with the indicated dilutions of anti-CD3. Proliferation on day 3 is shown. Data are representative of five experiments. (b) Secondary stimulation of CD4+ T cells with the indicated dilutions of anti-CD3. Proliferation on day 2 is shown. Data are representative of three experiments.
