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Phenotypic analysis of functional and dysfunctional Tax-specific CD8+ T-cells. (A) Differentiation memory phenotype, based on the expression of CD45RA, CCR7, and CD27 and (B) PD-1 expression of Tax-specific CD8+ T-cells from ACs were examined by flow cytometry. The number represents the percentage of indicated marker-positive or -negative cells in tetramer+ CD8+ T-cells. The number given in parenthesis shows MFI of PD-1 expression on the PD-1+ tetramer+ cells.
