Figure 5.

(A) Illustration of the fabrication of a cross-linked CPH following the addition of TA, Py, and Fe³⁺, as well as the physical and electrical properties of CPHs with different TA concentrations. (B) Upper three panels: Immunohistofluorescence images of transverse spinal cord sections obtained from animals in the sham, SCI, and hydrogel groups at 6 weeks. Bottom panel: NF staining of the regenerated nerve fibers in the hydrogel group, and the Western blot analysis of the spinal cord protein extracts showing the Tuj1, GFAP, and NF protein bands in the sham, SCI, and hydrogel groups. Adapted with permission from ¹²¹, Copyright 2018 American Chemical Society.