A Comparison of Conventional Collagen Sponge and Collagen-Gelatin Sponge in Wound Healing

Figure 3

Light micrographs of full-thickness skin defects at 1 and 2 weeks after implantation. The wounds of the CS-NSS (a), CGS-NSS (b), CS-bFGF (c), and CGS-bFGF (d) groups at 1 week. The wounds of the CS-NSS (), CGS-NSS (), CS-bFGF (), and CGS-bFGF () groups at 2 weeks. The black arrow with a solid line indicates a hair root which is the edge of the regenerated dermis-like tissue. The black arrow with a broken line indicates the end of the neoepithelium. The neoepithelium is shown in the upper section as a black line. Scale bar: 500 μm.