C57BL/6 mice bearing B16‐OVA melanomas were intratumorally administered with FPC2‐IG and FPC2‐IG‐IL‐2, followed by the adoptive transfer of congenially distinguishable naïve tumor‐reactive T cells (CD45.1+OT‐I; Figure 5a). This evidence concerns the gene IL2 and melanoma.