| MSC | mesenchymal stem/stromal cells |
| CM | conditioned medium |
| DMEMLG | Dulbecco’s Modified Eagle Medium with low glucose content |
| VEGF | vascular endothelial growth factor |
| HGF | hepatocyte growth factor |
| FGF2 | basic fibroblast growth factor |
| Angpt-1 | angiopoietin-1 |
| PEDF | pigment epithelial cells derived factor |
| FBS | fetal bovine serum |