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25.1 x 25.1 cm ⏐ 9.9 x 9.9 in (300dpi)
CENTRE JEAN PERRIN / ISM / SCIENCE PHOTO LIBRARY CENTRE JEAN PERRIN / ISM / SCIENCE PHOTO LIBRARY
Normal brain activity. Coloured positron emission tomography (PET) scan of a coronal section through the healthy brain of an 80-year-old man, showing normal activity. The radioactive tracer used was F18-FDG.
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