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File:Polio spine.png

English: A photomicrograph of the lumbar spinal cord depicting an infarct due to Polio Type III surrounding the anterior spinal artery. When spinal neurons 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.
Date 1964
US CDC logo.svg This media comes from the Centers for Disease Control and Prevention's Public Health Image Library (PHIL), with identification number #2765.

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  • Photo Credit:
  • Content Providers(s): CDC/Dr. Karp, Emory University
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English: None - This image is in the public domain and thus free of any copyright restrictions. As a matter of courtesy we request that the content provider be credited and notified in any public or private usage of this image.


Public domain This image is a work of the Centers for Disease Control and Prevention, part of the United States Department of Health and Human Services, taken or made as part of an employee's official duties. As a work of the U.S. federal government, the image is in the public domain.

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