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. 2023 May 16;20:100664. doi: 10.1016/j.mtbio.2023.100664

Fig. 2.

Fig. 2

Physicochemical characterization of G3@nCe/GelMA hydrogel. (a) Graphical illustration showing the photo-encapsulation of G3@nCe into GelMA hydrogel and existing supramolecular interactions between GelMA and G3@nCe. (b) Images showing G3@nCe/GelMA before and after cross-linking and images of different hydrogel groups after photogelation. (c) FTIR spectra of hydrogels showing characteristic peaks. (d) Stress versus strain curves of hydrogels under compression. (e) Compressive modulus measured for various hydrogels. (f) Swelling behaviour of hydrogels in PBS, DW and growth media. (g) SEM images showing honeycomb-like morphology by the cross-section of freeze-dried hydrogels. Scale bar: 100 ​μm. (h) Elemental mapping of freeze-dried hydrogel performed using EDS. The presence of ceria detected in both G3@nCe/GelMA and nCe/GelMA are also shown in the EDS graph. Data reported as mean ​± ​SD (n ​= ​3; ∗p ​< ​0.05, ∗∗p ​< ​0.01, ∗∗∗p ​< ​0.001).