A photomicrograph of the lumbar spinal cord depicting degenerative changes due to an infarct caused by Polio Type III. When spinal neurons themselves die, Wallerian degeneration takes place resulting in muscle weakness of those muscles once innervated by the now dead neurons (denervated). The degree of paralysis is directly correlated to the number of deceased neurons. An optimised and enhanced version of an image produced by the US Centers for Disease Control and Prevention / credit CDC


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Photo credit: © World Illustrated / Alamy / Afripics
License: Licensed
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