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. Author manuscript; available in PMC: 2020 May 1.
Published in final edited form as: Mater Horiz. 2019 Jan 9;6(4):733–742. doi: 10.1039/C8MH01208C

Figure 2.

Figure 2.

Schematic illustrations of the chemical structures, photographs, SEM images. (A) The design structure of the HGGelMA before and after crosslinking. (B) photographs of the HGGelMA hydrogels under squeezing. (C) The GelMA and HGGelMA hydrogels held with common tweezers. (D) The cylindrical HGGelMA hydrogels in different concentrations. (E) Photo showing the reproducible property of HGGelMAs. Hydrogel shapes were maintained after drying-swelling cycles. (F) SEM images of various concentrations of HGGelMAs after lyophilization. The insets showed high magnification views.