Notably, CD19‐CAR‐DNTs elicited remarkable cytotoxicity against B‐NHL cell lines (Raji and JeKo‐1), B‐cell acute lymphoblastic leukaemia (B‐ALL) cell lines (NALM‐6 and SUP‐B15), and primary B‐ALL blasts (Figure 6a, b). Here, CD19 is linked to precursor B-cell acute lymphoblastic leukemia.