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Physicochemical properties of GelMA-HAMA photocrosslinkable hydrogels. (A) Fluidable composite bioink transformed into concrete hydrogel via photo-crosslinking. (B) The injectable composite hydrogel demonstrates the ability to vary the shape of the material. (C) The composite hydrogel possesses a sparse, porous structure observed by SEM after Lyophilization treatment. (D) The 1H NMR of composite hydrogels. (E) The FTIR of composite hydrogels.
