The Use of Injectable Chitosan/Nanohydroxyapatite/Collagen Composites with Bone Marrow Mesenchymal Stem Cells to Promote Ectopic Bone Formation In Vivo
Figure 4
Light microscopic images of CS/nHAC induced bone formation at 2 and 4 weeks after implantation (microscopic magnification 100x) reveal weak evidence of bone formation with calcification (black arrow), collagen (green arrow), and inflammatory cells (red arrow): (a) HE, 2 weeks; (b) HE, 4 weeks; (c) Masson, 2 weeks; and (d) Masson, 4 weeks.
