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. 2022 Oct 7;13(3):822–838. doi: 10.1007/s13346-022-01245-z

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© The Author(s) 2022

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 8 — Cellular uptake of ATTOGal loaded transferrin-decorated CS NPs in liquid culture of RPMI 2650 nasal epithelial cells as measured by flow cytometry and compared to CS NPs without transferrin as well as free ATTOGal. Results are presented as median fluorescence intensity (data points indicate mean ± SD, n = 3; two-way ANOVA with Tukey’s post-test; one asterisk “*,” p < 0.05; two asterisks “**,” p < 0.01; three asterisks “***,” p < 0.005)