| FGF | Fibroblast growth factor |
| HORS | Human outer root sheath |
| H&E | Hematoxylin and eosin |
| HDP | Human dermal papilla |
| MOI | Multiplicity of infection |
| Ad | Adenovirus |
| GF | Growth factor |
| PDGF-CC | Platelet-derived growth factor-CC |
| HB-EGF | Heparin-binding epidermal growth factor-like growth factor |
| MDK | Midkine |
| VSM | Vascular smooth muscle |
| IB2 | Islet-Brain-2 |