Fig. 5
Representative histology images for alcian blue (AB) and safranin O staining for all three animals (n = 3) after 6 months in vivo. a AB staining for the scaffolds harvested 2- and 6-months post-implantation. The images clearly show intense blue staining around the polycaprolactone fibrils. b Staining with safranin O confirms the presence of a cartilaginous-like matrix (bright-red color). c Higher magnification images show morphological characteristics of the cells populating the new tissue formed within the implants. d Histological images of porcine septal cartilage as comparison to experimental groups