Mean cytokine levels in the supernatants of spleens collected from mice in the therapeutic study. At day 18, mice were sacrificed and splenocytes were restimulated with 20 μg/mL of Melan-A:26 isolated or combined with gp100:44 antigens for five days. The levels of the cytokines (A) TNF-α, (B) IFN-γ and (C) IL-4, were measured in culture supernatants by Quantikine®ELISA. Mean ± SD; n = 3, where n stands for the number of measurements per experiment. Statistics: Independent samples T-test; *p < 0.05,**p < 0.01 and ***p < 0.001.