IL2 and acute myeloid leukemia: CD123.CAR CIK cells produced both IFN-γ (28.5%±4.5 with THP-1, 13.4%±1.3 with primary AML, n=9) and IL-2 (10.1%±2.0 with THP-1; 5.8%±1.1 with primary AML, n=9), assessed by intracytoplasmic staining (Figure 4C and Supplementary Figure S3).