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. 2023 Jan 24;14:396. doi: 10.1038/s41467-023-35907-4

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© The Author(s) 2023

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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 1 — a–d Photograph of A. fulica (a), fresh mucus from A. fulica (b), d-SMG from A. fulica (c), and adhesion of A. fulica d-SMG on skin (d). e–h Photograph of H. lucorum (e), fresh mucus from H. lucorum (f), d-SMG from H. lucorum (g), and adhesion of H. lucorum d-SMG on skin (h). i–j Storage modulus (i) and loss modulus (j) of SMG and d-SMG with different hydration ratio (red for A. fulica, and blue for H. lucorum). k The main components of the two d-SMGs (n = 3 biologically independent samples in each group). For k, two-tailed t test was used. Data are presented as mean values + /- SEM. Scale bars, 2 mm (images in c, g). Source data are provided as a Source data file.