Fig. 2.

Meth A-specific CTL is specific for experimentally induced Meth A pulmonary metastases in adoptive transfer experiments. Groups of mice were injected i.v. with either Meth A or CMS4 sarcoma and 3d later treated by i.v. injection with IL-2 and either 1 × 10⁶ Meth A-specific CTL or 3 × 10⁶ CMS4-specific CTL, as indicated. The mice were sacrificed on day 14 and the number of pulmonary metastases determined visually. Asterisks denote significance, P < 0.05