| Kd | Dissociation constant |
| NM | Neuromelanin |
| NM-Fe3+ | iron-treated neuromelanin |
| PBS | phosphate buffered saline |
| RFU | relative fluorescence units |
| PD | Parkinson’s disease |
| UV/Vis or UV/visible spectroscopy | ultraviolet/visible spectroscopy |
| Kd | Dissociation constant |
| NM | Neuromelanin |
| NM-Fe3+ | iron-treated neuromelanin |
| PBS | phosphate buffered saline |
| RFU | relative fluorescence units |
| PD | Parkinson’s disease |
| UV/Vis or UV/visible spectroscopy | ultraviolet/visible spectroscopy |