In vitro maintenance (days) | Nanoparticle concentration (Mean particles · mL−1 ± SD) | Protein concentration (µg · mL−1) | Purity (particles · µg protein−1) |
---|---|---|---|
1 | 2.81 × 109 ± 2.13 × 108 | 8.602 | 3.27 × 108 |
2 | 2.33 × 1010 ± 1.12 × 109 | 33.840 | 6.89 × 108 |
3 | 1.07 × 108 ± 1.21 × 107 | 1.343 | 7.97 × 107 |