The percentage and level of expression of each cytokine in different T-cell subsets. The percentage of IL-2–, IFN-γ–, TNF-α–, and IL-4–producing cells in CD4⁺CD45RA⁺, CD4⁺CD45RO⁺, CD8⁺CD45RA⁺, and CD8⁺CD45RO⁺ CBL and ABL is shown on the left. The level of expression (MFI) of IL-2, IFN-γ, TNF-α, and IL-4 on CD4⁺CD45RA⁺, CD4⁺CD45RO⁺, CD8⁺CD45RA⁺, and CD8⁺CD45RO⁺ CBL and ABL is shown on the right. The results shown are the mean values of the samples shown in Fig 4.