Fig. 8

H&E-stained cross-sections of nonirradiated gelatin scaffolds (a) and e-beam-irradiated gelatin scaffolds (300 kGy) (b) after 4 weeks of fibroblasts culture. Dot lines indicate the top surface boundary of scaffolds. Note the remaining gelatin nanofiber scaffold (*) in the nonirradiated group and the degraded gelatin scaffold (**) in the irradiated group. Scale bars are 50 μm