Figure 7. CAR-T cell proliferation assay. (A) Colony formation assay; (B) Data statistics of number of colonies; (C) CCK8 assay. (WT + lymphoma cell + CAR-T group vs. KO + lymphoma cell + CAR-T group; WT + lymphoma cell + CAR-T + PD-L1 neutralizing antibody group vs. KO + lymphoma cell + CAR-T + PD-L1 neutralizing antibody group; **P < 0.01, nsP > 0.05; N = 3).