Genes from hormones are inserted into cancer cells to suppress the growth of those cells, or tumor cells carrying those genes are injected into the patient to generate an immune reaction, thereby suppressing the growth and spread of cancer cells.
作法是將細胞激素的基因植入癌細胞內，抑制癌細胞的生長，或是將帶有細胞激素的腫瘤細胞打進體內，使這些腫瘤細胞在體內激起免疫反應，以抑制癌細胞的生長和擴散。