FIG. 1.

T cells from infected mice proliferate when APC from uninfected mice are used. CD4 T cells were cultured with T-cell-depleted spleen cells from uninfected (U-APC) or infected (I-APC) mice. (A) Three separate experiments in which T cells responded to parasitized erythrocytes.(B) Three separate experiments in which T cells responded to stimulation with anti-CD3. In each experiment, three mice were sacrificed and their spleen cells were pooled. Data are expressed as mean ± standard deviations.