PECAM1 and atherosclerosis: In comparison with the groups that received bevacizumab, the control group exhibited a much higher enhanced intensity, a higher ratio of enhanced intensity in the plaque to that in the lumen and a greater number of CD31-positive microvessels in plaque sections, suggesting that bevacizumab could inhibit neovascularization within atherosclerosis plaques without affecting blood pressure, heart rate or serum lipid levels.