IL17A and neoplasm: In order to further examine roles of IL-17 in inflammation mediated tumor promoting microenvironment, mice were treated epicutaneously with TPA every other day for a total of 5 applications and then inoculated subcutaneously in the TPA treated skin area with an immunogenic mouse tumor cell line EG7 which is a mouse lymphoma cell line (EL4) transfected with ovalbumin (OVA).