IL17A and synovial sarcoma: Results in which SS-non-susceptible C57BL/6J mice were cannulated with the Ad5-IL17A vector revealed that increased IL-17A expression could induce several pathological features of SS, irrespective of whether the mice received the vector at 7 or 16 wks of age, two time points corresponding to innate and adaptive immune responses in SS-susceptible C57BL/6.NOD-Aec1Aec2 mice.