Ultrastructural Studies of Spleens, Brains, and Brain Cell Cultures of Mice with Scrapie

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Abstract
Mouse brains, cell cultures of mouse brains, and spleens from mice with scrapie were examined by electron microscopy. Brains and spleens of 10 scrapie-inoculated and control mice were studied. Seven brain-cell cultures, four of which were from mice inoculated intracerebrally or subcutaneously with scrapie, were examined. Status spongiosus and vacuolated neurons were found in the brains. Structures 35 nm in diameter were seen in the brains of mice inoculated intracerebrally. They were not evident in cell cultures, although a vacuolated structure was found in one such culture. No significant changes were found in the spleens.
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