These anti-tumor actions differ from those described for other mesenchymal stem cells [18–20] and may be due, in part, to the fact that CM-hUCESC has higher levels of factors with recognised anti-tumor effects, such as LIGHT (or TNFSF14), Fms-related thyrosine kinase 3 ligand (FLT-3 ligand), interferon gamma-inducible protein-10 (IP-10) and latency-associated protein, compared with CM from adipose-derived mesenchymal stem cells, for example [16]. Here, TNFSF14 is linked to neoplasm.