Figure 4.

(A) Ultralight gelatin nanofiber sponge. (B) Compressibility and recovery properties of the gelatin nanofiber sponge. (C) In vivo rabbit model evaluation of the hemostatic capacity of the ultralight gelatin sponge in comparison to sponge, gauze and commercial product. Image adapted with permission from Xie et al. [117]. (D) Fibrin pad (subcutaneously implanted; on the left), shows good vascularization after implantation day 14 compared to the control on the right. Image adapted with permission from Harmon et al. [123]. (E) Human hair hemostatic keratin hydrogels for the treatment of intracerebral hemorrhage were tested in the rabbit model. (F) Keratin solution and hydrogel showing gelation properties, scanning electron microscope (SEM) images of the gels. Images adapted from He et al. [128].