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The iron x-ray edge positions (eV) for the mouse brain specimens and the protein and mineral standards. Due to differences in pre-edge features between the standards and tissue samples, X-ray edge energies for all spectra were defined as the energy at the half-max of the edge jump in the normalized data.
| Specimen | Iron Edge Energy (eV) |
|---|---|
| Mouse brain | 7122.8 |
| Ferredoxin | 7120.4 |
| Magnetite | 7122.2 |
| Cytochrome c | 7123.5 |
| Myoglobin | 7124.0 |
| Ferritin | 7124.0 |
