| MSC | Mesenchymal stem cells |
| WJ-MSC | Wharton’s Jelly-derived mesenchymal stem cell |
| CM | Conditioned medium |
| EV | Extracellular vesicle |
| HS68 | Human foreskin dermal fibroblast cell line |
| HaCaT | Human skin keratinocyte cell line |
| TGF- | Transforming growth factor-beta |
| SCT | Spray Coating Technology |
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