IL27 and synovial sarcoma: We observed that MSC transplantation elevated the level of IL-27 (MSC 779.3±166.6 pg/mL vs PBS 534.8±79.27 pg/mL) (Fig. 5A) and reduced the level of IL-17A (MSC 7.88±1.01 pg/mL vs PBS 9.34±1.07 pg/mL) (Fig. 5B) in the blood of SS patients.