ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Left coronary artery. Coloured coronarography (contrast medium X-ray) scan of the healthy left coronary artery of a 60-year-old man's heart. Coronary arteries supply the heart muscle with blood, and narrowing and blockages in these arteries can lead to a heart attack. This is a 30-degree right anterior oblique view.
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