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PD-L1-CAR-T cells combined with CCSC-DC vaccine-sensitized T cells markedly inhibited the growth of ALDH1high SW480 cells. (A) ALDH1high SW480 cells grew rapidly in dishes during a 7-day culture. (B) Cytotoxicities of different treatments at different E/T ratios. After incubating for 4 h, cytotoxicity was measured by the LDH release method. Each assay was repeated independently five times. E/T: effector:target, LDH: lactate dehydrogenase. *P < 0.05.
