Unlike our previous study in which ectopic expression of rAAV-hTERTC27 in nude mice significantly up-regulated the IL-17 mRNA level [27] in xenografted tumor tissue, administration of rAAV-/rAdv-hTERTC27 viral cocktail in C57BL/6 mice showed a little increase of IL-17 cytokine level in blood in this study. Here, IL17A is linked to neoplasm.