NOS2 and psoriasis: It was found that although expression of TAB2 and iNOS was low in MCS in psoriatic patients, expression of TGF-β and IL-10 (factors important for the function of MCS) was not significantly different in both groups, which suggests that MSC dysfunction in psoriasis is not induced by IGF-β and LI-10, but by mir-155 and iNOS [27].