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Schematic representation of the methacrylation of gelatin to form GelMa. Functional side chains of the GelMa molecule can be photo‐crosslinked by adding a specific photoinitiator (PI) and light irradiation, to form a network contributing to the stiffness of the resulting scaffold. Source: Adapted from Caballero Aguilar et al,39 reproduced with permission of Royal Society of Chemistry via Copyright Clearance Center
