Functional effects of MSCs related to secreted proteins (14, 16). EGF, epidermal growth factor; FGF, fibroblast growth factors; GDNF, glial cell derived neurotrophic factor; G‐CSF, granulocyte colony stimulating factor; HGF, hepatocyte growth factor; IDO, indoleamine 2–3 dioxygenase; IL, interleukin; IGF, insulin‐like growth factor; IGFBP, insulin‐like growth factor binding protein; MCP, macrophage chemoattractant protein; MMP, matrix metallo‐proteinase; PGE, prostaglandin E; SDF, stromal derived factor; SFRP, secreted frizzled related protein; TGF, transforming growth factor; VEGF, vascular endothelial growth factor.