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| | Polio |
 | | When the brain is cut during postmortem examination, damage is grossly evident as swelling, softening, congestion and petechial hemorrhage. |
 | | The non-neural aspects of poliomyelitis, so critical to the pathogenesis of the disease, are reflected not only in the lymph nodes but also in the spleen, liver, kidneys and other viscera. |
 | | Two to 6 days after onset, the illness may subside entirely (abortive poliomyelitis), abate temporarily or progress directly to CNS involvement. |
| www.kcom.edu /faculty/chamberlain/Website/tritzid/polio.htm (482 words) |
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