IFNG and neoplasm: Data showed that, while T cell cloids generated towards ppCT9–17, ppCT50–59 and ppCT91–100 epitopes produced higher levels of IFN-γ when stimulated with IGR-Heu-TAP, T cell clones generated towards the ppCT16–25 epitope produced higher cytokine levels when stimulated with autologous IGR-Heu tumour cells (Fig. 2b).