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Association Between Expression Level of PD1 by Tumor-Infiltrating CD8+ T Cells and Features of Hepatocellular Carcinoma

T-cell exhaustion, or an impaired capacity to secrete cytokines and proliferate with overexpression of immune checkpoint receptors, occurs during chronic viral infections but has also been observed in tumors, including hepatocellular carcinomas (HCCs). We investigated features of exhaustion in CD8+ T cells isolated from HCC specimens.

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