IL2 and neoplasm: The THT plus i.t. IL-2 group maintained a low average tumor volume, peaking at 60.1 mm3 (± 55.7 mm3) on day 9 post THT, compared to 230 mm3 (± 96.1 mm3) in the control group, 157.1 mm3 (± 112.7 mm3) in the i.t. IL-2 only group, and 166.9 mm3 (± 148.8 mm3) in the THT only group (Figure 5A).