Extended Data Fig. 4: HMEJ-engineered and lentivirally transduced CD19 CAR T cells produce cytokines in response to target cells, as measured by ICS.

Percentage of cells expressing cytokines IFNγ, TNF, and IL2 as well as a degranulation marker CD107a in CD4 (left panels) and CD8 (right panels) CD19 CAR T cells following coculture with CD19+ Raji target cells.