PNMA3 and melanoma: The responsiveness of MA3/DP4 TCR T cells towards MZ2-MEL43 cells, generally weak and not reproducible, was not enhanced by IFNγ pretreatment of target cells, whereas T cells were clearly able to recognize melanoma cells following loading with the MA3 16-mer peptide but not a core 12-mer peptide (TQGFVQENYLEY, i.e., MA3247–258) (Figures 5(b), 5(c), 5(d), and 6(b)).