It has been shown that MSCs can improve ARDS based on antimicrobial, anti‐inflammatory, regenerative, antioxidative stress, angiogenic and antifibrotic effects through secretion of anti‐inflammatory factors, such as COX2, IDO, NO, TGF‐β1, PGE2 and HLA‐G5.3 Here, TGFB1 is linked to acute respiratory distress syndrome.