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Adenosine accelerates replicative senescence in human CD8 T lymphocytes. A, Total PD for DMSO, EHNA, and adenosine/EHNA-treated cultures when replicative senescence was reached; n = 4, mean value shown with horizontal line. B, IL-2 mRNA was analyzed by QT-PCR and results expressed relative to GAPDH. *p < 0.05; **p < 0.01.
