Atherosclerosis: White Blood Cells

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Arteries carry blood from the heart to the rest of the body. A thin layer of cells allows blood to flow easily and it’s called the endothelium. Atherosclerosis begins when the endothelium becomes damaged allowing bad cholesterol to build up in the artery wall. The body sends white blood cells to clean up the bad cholesterol but sometimes the cells get stuck at the affected site. Over time plaque can accumulate, made up of cholesterol, macrophages, calcium, and other substances from the blood. Can be fatal if not treated.
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