Figure 5. Western blotting of AKT signaling pathway-related proteins, exosome-associated proteins and PD-L1. (A) Protein bands of p-AKT, CD9, CD63 and PD-L1; (B) Relative protein expressions of p-AKT, CD9, CD63 and PD-L1. (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).