Fig. 11From: Progress of tissue adhesives based on proteins and synthetic polymersTissue adhesion mechanism of urethane-based adhesive. H2N-R`represents tissue amines that react with isocyanate groups through urea bond formation. (Adapted from Scognamiglio et al. Applied Biomaterials, 2016; 1048(3):626–639, with permission from Wiley Online Library[1])Back to article page