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. 2021 Jun 28;26(13):3955. doi: 10.3390/molecules26133955

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Characterization of PLGA nanoparticles. (a) Scanning electron microscopy image of as-synthesized PLGA nanoparticles. (b) Hydrodynamic size distribution of PLGA nanoparticles obtained from DLS measurements. (c) The absorbance of as-synthesized pristine PLGA nanoparticles and Rose Bengal-loaded PLGA nanoparticles. (d) Flow cytometry assay on evaluation of fluorescence of PLGA nanoparticles loaded with Rose Bengal in the fluorescence channel corresponding to the Rose Bengal fluorescence. Excitation (e) and emission (f) spectra of the PLGA and Rose Bengal-loaded PLGA nanoparticles.