Fig. 3
Representative histological pictures of the fractured area in non-union rats 8 weeks after bone defect (a, b) and comparison of new bone formation (c). More extensive accumulation of new bone occurred on the fracture line (arrow) in the gold-implanted rat (b), compared with that of the control rat (a). c shows significant increases in extents of new bone formation in the gold-implantation group (n = 10) compared to the control group (n = 14). *P < 0.05