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Characterization of GelMA and SsBb/GelMA hydrogels. (A) Swelling test of GelMA and SsBb/GelMA hydrogels. (B) Degradation test of GelMA and SsBb/GelMA hydrogels. (C,D) Compression test of GelMA and SsBb/GelMA hydrogels. (E) Drug release of the SsBb/GelMA hydrogel. (F) Fourier infrared detection of GelMA and SsBb/GelMA hydrogels. **p < 0.01; ns, no significance.
