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Chimeric antigen receptor (CAR) T-cell product composition, absolute numbers on of CAR+ cells in peripheral blood and PD-1 expression before and after PD-1 inhibitor. (A) Chimeric antigen receptor T (CAR T) product composition and CAR+ cells/mL of blood in patient 1; (B) PD-1 expression on CAR T cells in patient 1; (C) CAR T product composition and CAR+ cells/mL of blood in patient 2; (D) PD-1 expression on CAR T cells in patient 2.
