BCL2 and neoplasm: Consistent with the increased cell population of 20BBZ-Bcl-2 CAR-T cells, tumor burden in the peripheral blood, spleen, and bone marrow was lower in mice treated with 20BBZ-Bcl-2 CAR-T cells compared to that in the group treated with 20BBZ CAR-T cells (Figure 6A–C and Figure S5).