IL2 and cancer: The results show that the mfhAXL CAR-T cells specifically secreted elevated levels of interleukin-2 (IL-2) and interferon-γ (IFN-γ) when co-cultured with A549 and Panc-1 cancer cells, as compared to control T cells, which indicate specific T-cell activation in the presence of target cells (Figure 4C,D).