Efficacy of rhBMP-2 Loaded PCL/β-TCP/bdECM Scaffold Fabricated by 3D Printing Technology on Bone Regeneration

Figure 10

Hematoxylin-eosin (H&E) stained sections at 4 weeks after surgery. Control group (a, b, and c), PCL/β-TCP group (d, e, and f), PCL/β-TCP/bdECM group (g, h, and i), and PCL/β-TCP/bdECM/BMP group (j, k, and l). NB: new bone, CT: connective tissue, O: osteoblasts, and S: 3D-printed scaffold [original magnifications: ×12.5 (a, d, g, and j), ×40 (b, e, h, and k), and ×100 (c, f, i, and l)].