Figure 2. Angiographic images of control animal at (A) day 10 (immediately before gene transfer), and (B) day 40 (30 days after transfection); and pVEGF₁₂₁-treated animal at (C) day 10 and (D) day 40. In contrast to control, collateral vessel development becomes evident in the pVEGF₁₂₁-transfected animal.