IL2 and neoplasm: To investigate the potential of UVC-irradiated PBMCs in enhancing T-cell expansion, we initially expanded tumor-infiltrating lymphocytes (TILs) for 14 days using IL-2, followed by an additional 11 days of rapid expansion (REP) with IL-2 and aHuCD3 in combination with UVC-irradiated or X-ray irradiated PBMCs.