Figure 1. Demonstration of changes in CD68-positive macrophages (A) and Oil Red O staining (B) of aortic arch plaques from apoE−/− mice during atherosclerosis regression.
Left panels show aortic arch lesions of an apoE−/− mouse after 16 weeks on a high-fat diet; right panels show regressing aortic arch lesions 5 days after transplantation of the aortic arch from the same type of apoE−/− mouse in the left panels into a transgenic human apolipoprotein A-I expressing apoE−/− mouse. Magnification: 10×.