737580.fig.004a
(a) 3 weeks
737580.fig.004b
(b) 4 weeks
Figure 4: Histology of tissue retrieved at 3 weeks (a) and 4 weeks (b) showing bone formation after injection of Ad-VEGF+BMP-6 infected marrow cells expressing hVEGF and hBMP-6 (stain: H&E, original magnification 60x).