FIG. 3.

Effects of IL-2 on MP- and TT-induced memory CD4⁺ T-cell responses. Memory CD4⁺ T cells from Hp+ (closed symbols) and Hp− (open symbols) volunteers were stimulated with DCs pulsed with MP or TT in the presence or absence of 25 U of IL-2/ml, and proliferation (A) and IFN-γ production (B) were determined. Values are shown after subtraction of background responses. Median values are indicated by horizontal bars. A paired t test was used for statistical evaluation.