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Self-healing process. (A–E) Self-healing behavior through a syringe, mixing the two halves of the hydrogel. (F) Visual self-healing connecting two halves of a disk hydrogel. Reprinted from M. Vahedi et al. Self-Healing, Injectable Gelatin Hydrogels Cross-Linked by Dynamic Schiff Base Linkages Support Cell Adhesion and Sustained Release of Antibacterial Drugs [112]. Copyright © (2018) with permission of Wiley-VCH.
