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Molecular volume was calculated with the equation V=4πr3/3, where r is the radius of the sample.
| Sample | Radius (nm) | Molecular volume (nm3) |
|---|---|---|
| HbA | 3.14 | 129.6 |
| αα-Fumaryl Hb | 3.16 | 132.1 |
| (Propyl-PEG5K)6-Hb | 5.40 | 659.2 |
| (Propyl-PEG5K)6-αα-Hb | 6.56 | 1181.9 |
