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Schematic diagram of tough hydrogel preparation. a) Schematic diagram of human muscle strengthening. b) Schematic diagram of high biocompatibility and highly tough hydrogel preparation. c) Schematic diagram of the mechanism of hydrogel intensification. d) Mechanical properties of tough hydrogel. e) Highly tough hydrogel used to lift weights. f) Schematic diagram of in vivo implantation to repair tendons.
