IL2 and non-Hodgkin lymphoma: Three subsets of immune cells were used in standard cytotoxicity assays as effectors: CD19CAR-Jurkat cells sorted to 100% purity (which kill through CD19 recognition), activated (3000 IU/mL IL-2 + 50 ng/mL αCD3 mAb) Jurkat and lymphokine activated killer (LAK) cells (both of which kill indiscriminately and independently of CD19 or MHC) efficiently killed NHL lines, albeit to varying degrees (Figure 2A–C).