In order to evaluate the in vivo efficacy of the combined use of MNPs and EMFs in the transfer of antitumoral cells to treat cancer, we used a murine syngeneic tumour model, where the implanted EG7-OVA tumour cells express an OVA antigen presesented by H-2 Kb and which is specifically recognised by OT-I CD8+ T cells. The gene discussed is CD8A; the disease is cancer.