Normal C57BL/6 mice are inoculated with MC-38 SC in the right hindflank (Table 1, experiment 1). After 7 days, mice received T cells (6.5 × 10⁷ cells/injection) or T-cell subsets (3.2 × 10⁷ cells/injection) as indicated. Tumor volumes were measured over 31 days. Median tumor volumes are shown for each treatment group. There were 10 mice per group.