ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY
Alzheimer's disease. Conceptual computer artwork comparing a scan of a hemisphere from a normal brain (right) with one from a brain affected by Alzheimer's disease. The fragmentation of the image on the left reflects the loss of brain tissue, seen on the scan as red areas. Alzheimer's disease causes memory loss and disorientation; it is incurable and the causes are poorly understood.
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