Sample description.

Nine-week old mice were divided into four groups. Groups 1 and 2, consisting of 10 mice each, were injected intra-footpad with 2×105 D122 cells per mouse. Groups 3 and 4, consisting of 10 mice each, were injected 2×105 A9F1 cells per mouse. After 26 days, when the primary tumors had reached 8 mm in diameter, animals in groups 1 and 3 were anesthesized and the tumors were resected. We followed the spread of metastases in mice in group 1 and the recovery and cure of mice in group 3 (see Figure 1).