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Measurement of tissue adhesion force of hydrogels (n = 4) (A) HAGA10-HAMA15 and (B) HAGA20-HAMA15 by the tack adhesion test. The precursors were in situ photocrosslinked and adhered to the surface of animal tissues. (C) Adhesion chemistry between hydrogels and the tissue surface due to nucleophilic group interactions and quinone.
