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| Data attributes | Explanation | Value |
|---|---|---|
| Magnetic core | Chemical formula maghemite | γ-Fe2O3/Fe3O4 |
| Zeta potential (mV) | Electrokinetic potential in colloidal dispersions | (−42) to (+40) |
| Size (nm) | Particle size (nm) | 2–150 |
| B 0 (T) | Magnetic field strength | 0.47–4.7 |
| Fe/cell (pg) | Iron concentration per cell (pg) = the amount of SPIONs internalized inside the cells | 2.15–1459 |
| Relaxivity, r2 (s−1 mM−1) | Relaxation rate as a function of concentration | 27.6–549 |
