To analyse the involvement of caspases in this rapid vSAG7-mediated tumour cell lysis, we added either ZVAD-fmk (a broad spectrum caspase inhibitor) or IETD-CHO (a specific inhibitor of caspase 8) to the coculture of Vβ6+ T cells and ESb-MP tumour cells. This evidence concerns the gene CASP8 and neoplasm.