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. 2020 Oct 27;10:18370. doi: 10.1038/s41598-020-75196-1

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© The Author(s) 2020

Open Access This 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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Antimicrobial cryogels have advantageous mechanical properties and microarchitectural features. A total of three types of cryogels were fabricated using 4% HAGM and different amounts of CP (0–0.2% CaO₂). (a) swelling ratio, (b) Young’s moduli, and (c) evaluation of pore connectivity. Cross-sectional SEM images showing interconnected macroporous network of (d) CP-free cryogels (0% CaO₂), (e) CP-containing (0.1% CaO₂) cryogels, and (f) CP-containing (0.2% CaO₂) cryogels. SEM samples (n = 3) were scanned and representative images have been presented. Cross-sectional SEM images for visualization of CP (pseudocolored in pink): (g) CP-free cryogel (0% CaO₂), (h) CP-containing (0.1% CaO₂) cryogel, and (i) CP-containing (0.2% CaO₂) cryogel. Pore size distribution histograms of (j) CP-free cryogels (0% CaO₂), (k) CP-containing (0.1% CaO₂) cryogels, and (l) CP-containing (0.2% CaO₂) cryogels. Scale bars = 100 µm (d, e, and f) and 50 µm (g, h, and i).