Chart 1.
List of abbreviations
| Term | Abbreviation |
| ACTH | Adrenocorticotropic hormone |
| α-MSH | Melanocyte-stimulating hormone |
| bFGF | Basic fibroblast growth factor |
| BMP | Bone morphogenic protein |
| cAMP | Cyclic adenosine monophosphate |
| cGMP | Cyclic guanosine monophosphate |
| c-kit | Mast cell growth factor |
| CREB | cAMP response element |
| ET | Endothelin |
| GM-CSF | Granulocyte-macrophage colony-sti mulating factor |
| IL | Interleukin |
| IP3/DAG | Inositol triphosphate/diacylglycerol |
| MAP | Mitogenic activated protein |
| MATP | Membrane-associated transporter protein |
| MC1-R | Melanocortin recetor type 1 |
| MITF | Microphthalmia-associated transcription factor |
| NGF | Neuronal growth factor |
| NO | Nitric oxide |
| PG | Prostaglandin |
| PKA | Protein kinase A |
| PKC-β | Protein kinase C-β |
| POMC | Proopiomelanocortin |
| ROS | Reactive oxygen species |
| SCF | Stem cell factor |
| TNF-α | Tumor necrosis factor α |
| TRP | Tyrosinase-related protein |
| UVR | Ultraviolet radiation |