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Multifunctional biohydrogels based on carboxymethyl chitosan, sodium alginate and tannic acid and its application in rabbit liver injury model. A: scanning electron microscope images of hydrogels and elemental distribution of C, N, O and B; B: Schematic diagram of the application of hydrogel in a rabbit liver hemorrhage model, including photos of the hemostatic process, comparison of bleeding time and blood loss. Reproduced with permission from 214. © 2022 Zou Chen-Yu et al.
