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Prognostic significance of PDL1 expression (A) in tumor cells as well as the intersection of PDL1 expression and CD3+ T cell infiltration (B) in subgroups of different pTNM stages. Using the median of CD3 density as the cutoff value and PDL1 membrane expression in tumor cells, the patients were divided into 2 groups, one with CD3 density lower than median and PDL1 negative expression, and the other group consisted with the rest patients.
