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2008 | 68 | 1 | 39-42

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Tubulovesicular structures are present in brains of hamsters infected with the Echigo-1 strain of Creutzfeldt-Jakob disease agent


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Tubulovesicular structures (particles; TVS) are virion-like particles 25?30 nm in diameter found by thin-section electron microscopy in brains of all prion diseases including scrapie, Creutzfeldt-Jakob disease (CJD), fatal familial insomnia (FFI) and Gerstmann-Str?ussler-Scheineker disease (GSS), as well as in cell cultures infected with TSE agents. TVS are regarded as a disease-specific ultrastructural marker for TSEs and, by those not completely satisfied with the prion hypothesis, they are even considered to be a possible candidate for the infectious TSE agent itself. A caveat regarding that interpretation stemmed from previous failures to find TVS by electron microscopic studies of tissues from animals infected with the Echigo-1 strain of CJD agent. We now report detecting TVS in brains of hamsters infected with that strain of CJD agent, albeit with a very low frequency.




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P.P. Liberski, Laboratory of Electron Microscopy and Neuropathology, Department of Molecular Pathology and Neuropathology, Chair of Oncology, Medical University of Lodz, Poland


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