ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Coloured digitised angiogram (X-ray) of arteries branching from the aorta of the heart in a 62 year old patient, showing narrowing (stenosis, at top left and bottom centre). The large aorta is seen at lower right. This arterial narrowing was caused by atherosclerosis, fatty deposits on the wall of the arteries. The patient was a smoker.
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