CD19-CAR(Mem) and standard CD19-CAR T cells were generated from two donors (A-D) E20003 and (E-H) E19028 and evaluated in BV173.ffluc xenograft NSG mouse model (n=5 per group). Non-transduced (NT) memory or standard T cells served as control. (B, F) Bioluminescence images. (C, G) Quantification of bioluminescence signal; n=5 per group, Two-way ANOVA, *P<0.05, ***P<0.001, ****P<0.0001. (D, H) Kaplan-Meier survival analysis, Log-rank test, *P<0.05, **P<0.01.