SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
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Valery Spiridonov, a Russian computer programmer who has volunteered to be the world's first human head transplant patient. It has been claimed that human head transplants may be feasible in the near future. Spiridonov has Werdnig-Hoffman disease (type 1 spinal muscular atrophy), a rare genetic muscle wasting condition caused by the loss of motor neurons in the spinal cord. Affected individuals are unable to walk, and have a much reduced life expectancy.
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