Fig. 1.

a) Schematic illustration of the fabrication of biomimetic hybrid hydrogel comprising O-HA, GC and MenSCs-derived CM. Scale bar: 10 μm. b) The formation of hybrid hydrogel through mixing two precursor solutions. c) Two precursor solutions loaded in medicine mixer was injected to form the characters of “ZJU” and “cross-ring” shape. d) Self-healing process of hybrid hydrogel. Precast heart-shaped hybrid hydrogels with pink and blue color were cut into two pieces. Two pieces with different colors could be combined into new heart-shaped hydrogel that can maintain integrity under gravity. (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)