Fig. 4

The expansion kinetics of CAR T cells and different T cell subsets after CD19 CAR T cell infusion. a The expansion and persistence of CNCT19 CAR T cells after infusion. b The expansion and percentage of CD4⁺ or CD8⁺ T cells in peripheral blood after CAR infusion. c–d The phenotype of CD8⁺ T cells (c) or CD4⁺ T cells (d) in peripheral blood after CNCT19 CAR T cell infusion (T_N, naïve T cells; T_CM, central memory T cells; T_EM, effective memory T cells; and T_E, effector T cells)