Rheological and mechanical characterizations, adhesion and in vivo hemostatic performance of HA-DA@rhCol hydrogels. A) Shear rheology and B) Stress-strain profiles of these hydrogels by compression. C) Stress-strain profiles of these hydrogels by tensile tests. D) Photographs of adhesive strength test, E) Adhesive strength of different hydrogels, n = 3. F) Hemostatic performance of hydrogel HA-DA@rhCol. G) Photographs of hydrogels sticking to fingers. H) Photographs of hydrogels glued to different organs. Error bars indicated means ± SD. Statistical significances were analyzed using t-test. *P < 0.05, **p < 0.01, ***p < 0.001 compared with control group.