BSIP VEM / SCIENCE PHOTO LIBRARY BSIP VEM / SCIENCE PHOTO LIBRARY
Atheroma & thrombus. Coloured light micrograph of a section through an artery almost completely blocked by atherosclerosis and a thrombus. The large red mass in the centre is a thrombus, an abnormal blood clot. This is attached to a part of the arterial wall that has thickened with atheroma (yellow-red), a fatty deposit containing fibrous tissue, dead cells & cholesterol. Atherosclerosis is the biggest cause of death in the UK. It causes progressive narrowing of the arteries by deposits of atheroma, and encourages the formation of abnormal clots that can block arteries. Fatal complications of atherosclerosis include heart attack and stroke. Magnification unknown.
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