MSC secrete high amounts of cytokines, which induce the inhibition of tumor growth in vivo in breast cancer cells such as IL12, IFN-α, CXCL10, LAP, DKK-1/3, TRAIL, TNFSF14 (also known as LIGHT), and FLT-3 ligand [87,88,89]. Here, TNFSF14 is linked to breast cancer.