Active Smoking Increases Microsomal PGE₂-Synthase-1/PGE-Receptor-4 Axis in Human Abdominal Aortic Aneurysms

Figure 1

Representative immunohistochemical images of vWF (endothelial cell marker), CD45 (pan-leukocyte marker), and CD68 (macrophage marker) in aorta samples from two AAA patients. Red arrow-ends indicate some immunostained cells. Size bars: 500 μm. In upper panels black-tipped arrows are used to orient the position of the vessel by indicating to where intima and adventitia are.