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Cell viability. CD4+ CD25− T cells were cultured with 5-aza-2′-deoxycytidine (5-Aza-dC) and epigallocatechin-3-gallate (EGCG) and were analysed for viability after 7-AAD staining.(a) Gate setting is shown from one representative experiment. (b) Cell viability after 4 days (white bars) and 7 days (black bars). *P < 0·05, **P < 0·01.
