Additional file 1: Figure S1. The Characteristic of CD70 CAR T cells. (A) Phenotypical characterization of CD70 CAR T cells by flow cytometry. differentiated phenotype was determined by the expression of CD45RO and CD62L in 5 different donors. *P<05, by paired Student t test. (B) The activated biomarker expression of CD70 CAR T cells by flow cytometry. Activation was measured by the expression of CD69, CD25, CD137 in 5 different donors ***P<0.001, by paired Student t test. (C). The exhausted marker expression of CD70 CAR T cells by flow cytometry. exhaustion was measured by the expression of Tim3, PD-1 and Lag3 in 5 different donors *P<05, by paired Student t test. (D) The percentage of CD8+ cells in CD3+ cells of CD 70 CAR T cells by flow cytometry. *P<05; ns, not significant, by paired Student t test.