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. 2020 Mar 13;11:1365. doi: 10.1038/s41467-020-15152-9

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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 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. 2 — Frequency sweep measurements of storage and loss modulus of HA-BP•Laponite physical hydrogels and chemically (hydrazone) cross-linked HABP analogs without and with clay (a). Schematic of proposed interactions (b). Interference of the stronger, but slower forming, BP•Laponite cross-links, by weaker, faster forming hydrazone cross-links could account for the weaker gels formed with addition of Laponite to HABP chemical gels compared to HA-BP•Laponite physical hydrogels.