Figure 1

Immunohistochemical examinations of proximal aorta transverse sections (a) Apolipoprotein E (ApoE) knockout mice stained with hematoxylin and eosin ( × 100) (arrow indicates the atherosclerotic plaque), (b) C57BL/6J mice stained with hematoxylin and eosin ( × 100) and (c) ApoE knockout mice proximal aorta transverse sections stained with Oil Red O ( × 400; arrows indicate the foam cells of the atherosclerotic plaque).