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Total iron contents in cell culture medium samples
| Samples | Single exposure spent medium | Co-exposure spent medium | Medium spiked with Fe2O3 | Pristine medium |
| Total iron content in medium (μg) * | 0.84 ± 0.07 | 0.70 ± 0.07 | 3.36 ± 0.07 | 1.26 ± 0.07 |
| Inferred cellular iron uptake (μg) ** | 2.52 ± 0.14 | 2.66 ± 0.14 | NA | NA |
* The uncertainty value only reflects the instrument uncertainty.
** Obtained by subtracting the iron in the spent medium from that in the medium spiked with Fe2O3.
