Figure 3. CD25 upregulation on in vitro stimulated AND T-cells.
(A) CFSE-labeled CD4+CD25− AND T-cells were stimulated with PCC peptide and irradiated APC for the indicated times, then analyzed for CD25 expression and CFSE fluorescence by flow cytometry. (B) Cells were stimulated as in (A) except in the presence of neutralizing anti-IL-2 antibody.