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. 2023 Nov 14;24(22):16286. doi: 10.3390/ijms242216286

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© 2023 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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Characterization of BSP/BER hydrogel. (A) Representative SEM images of the hydrogel. (B) FTIR spectra of BSP, BER, CBM and BSP/BER hydrogel. (C) The storage (G′) and loss (G″) moduli of the BSP/BER hydrogel were measured over a frequency range of 0.1–10 Hz. (D) Viscosity of the BSP/BER hydrogel. (E) The water loss rate of BSP/BER hydrogel within 48 h at 37 °C. (F) Cumulative release of BER from the BSP/BER hydrogel in PBS (pH = 7.4) within 24 h at 37 °C.