Fig. 1From: A comparative study of enzyme initiators for crosslinking phenol-functionalized hydrogels for cell encapsulationSchematic of PVA-Tyr macromer (n = 364, m = 7) (a) and polymerization of PVA-Tyr hydrogel network (b). Mechanisms of enzymatic oxidative crosslinking of tyramine residues with HRP or hematin and H2O2 or laccase with O2 (c), or tyrosinase with O2 (d)Back to article page