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. 2023 Aug 24;15(9):2194. doi: 10.3390/pharmaceutics15092194

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© 2023 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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Hydrodynamic diameter (bars) and polydispersity index (PDI, squares) of the (A) nanogels prepared with bare and the citrate-stabilized Fe₃O₄ nanoparticles, and (B) of the BSA-functionalized nanoparticles. Insets: zeta potential of the respective nanogels. (C) Raman spectra of nanogels containing Fe₃O₄ nanoparticles functionalized with citrate and BSA. (D,E) TEM images of the nanogels containing citrate-stabilized Fe₃O₄ nanoparticles, and (F) the respective histogram of the measured particle size.