EYE OF SCIENCE / SCIENCE PHOTO LIBRARY EYE OF SCIENCE / SCIENCE PHOTO LIBRARY
Atherosclerosis. Light micrograph of a cross section through an artery obstructed with an atheroma plaque. The artery (at upper left) has a central lumen (black), where blood flows. Bordering the lumen is a fibrous and fatty deposit of a plaque on the arterial wall. This can be seen as a dark grainy irregular deposit on the inner wall. Surrounding the plaque is the dark artery wall muscle with an inner layer of lighter endothelium. Atherosclerosis, the thickening of the artery walls, is mainly due to a fatty diet high in cholesterol. This can result in clot formation or severe artery blockage which may lead to heart attack. Magnification: x15 at 6x7cm size.
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