THIERRY BERROD, MONA LISA PRODUCTION / SCIENCE PHOTO LIBRARY THIERRY BERROD, MONA LISA PRODUCTION / SCIENCE PHOTO LIBRARY
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Twin research. Teenage twins undergoing an MRI scan of their brains. This is part of research into the development of the adolescent brain. Twins are used so that comparisons can be made between two people with identical genetic make-up. Photographed at the National Institute of Mental Health, Maryland, USA.
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