Figure 6

CD8 ⁺ T cells from immunized mice are able to lyse tumor target cells. In vitro CTL activity of CD8 T lymphocytes isolated from spleens of BALB/c mice immunized with ECD/Her2 (black square) or PBS (open circle). CD8 T cells from these mice were used as CTL effectors against D2F2/E2 targets at the indicated E/T ratios and exhibited significantly increased lytic activity (p < 0,01). Points and error bars represent the means and the range of values obtained from 3 independent experiments.