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Physicochemical characteristics of PLGA NPs (mean ± SD; n ≥ 3).
| nanoparticle system | hydrodynamic diameter [nm] | polydispersity index | zeta potential [mV] | drug load [µg Lumogen® Red/mg NPs] |
| PLGA NPs | 214.6 ± 13.2 | 0.06 ± 0.02 | −41.2 ± 8.1 | — |
| PLGA NPs (Lumogen® Red loaded) | 221.0 ± 16.4 | 0.03 ± 0.02 | −45.9 ± 1.5 | 8.14 ± 1.29 |
