K H FUNG / SCIENCE PHOTO LIBRARY K H FUNG / SCIENCE PHOTO LIBRARY
Stroke due to blood clot. Digitally enhanced 3D magnetic resonance imaging (MRI) scan of an axial view of a human brain following a stroke or cerebrovascular accident (CVA). The damaged area of the brain is at centre right (red). A stroke is where the brain is damaged due to hypoxia (lack of oxygen). This is usually due to an interruption or other damage to the blood supply, such as a burst blood vessel or a clot blocking the blood flow to the brain.
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