T-cell viability assays. (A) Dot plot showing T-cell viability as assessed by Annexin V and 7-AAD staining among unstimulated or stimulated T cells in the absence or the presence of 1μM of the drug. A representative experiment of 8 is shown. (B) Box plot representation showing the effect of 5-azaC on T-cell viability. Significant differences were only observed at a dose of 10μM of the drug.