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. 2022 Nov 20;14(11):2527. doi: 10.3390/pharmaceutics14112527

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© 2022 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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(A) Fluorescence images showing the retention of different formulations on bovine urinary bladder mucosa washed with different volumes of AU. (a) Control, (b) St-Cou-SLNs-2, (c) C-St-Cou-SLNs-2, (d) G₉St-Cou-SLNs-2, (e) G₁₀C-St-Cou-SLNs-2. (B) Percentage retention of St-Cou-SLNs-2, C-St-Cou-SLNs-2, G₉St-Cou-SLNs-2 and G₁₀C-St-Cou-SLNs-2 on bovine urinary bladder mucosa after washing with different volumes of AU. Abbreviations: G₉: carbapol/poloxamer 407 gel, G₁₀: chitosan/poloxamer 407 gel, Cou: coumarin-6 dye, St: stearic acid, C: coated, SLNs: solid lipid nanoparticles.