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The content of gadolinium in the obtained agents, given as weight-percent (wt%) or molar-percent mol% with respect to the sum of Fe and Gd present in the sample
| Sample name | Gd wt% | Gd mol% |
|---|---|---|
| SPION-Gd (electrostatic) | 3.8 ± 1.8 | 1.3 ± 0.6 |
| SPION-Gd (ACh-GdDTPA) | 11.5 ± 1.3 | 4.4 ± 0.5 |
| SPION-Gd (GdCl3) | 0 | 0 |
| SPION-CCh | 0 | 0 |
