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  • Title: Spread of Venezuelan equine encephalitis virus in mice olfactory tract.
    Author: Ryzhikov AB, Ryabchikova EI, Sergeev AN, Tkacheva NV.
    Journal: Arch Virol; 1995; 140(12):2243-54. PubMed ID: 8572944.
    Abstract:
    Spread of Venezuelan equine encephalitis (VEE) virus and damage of the central nervous system (CNS) in mice infected by respiratory route was studied. Virus concentration in organs and blood, "dose-effect" relationships, and ultrastructural lesions in various tissues were examined in immune and normal mice. We showed, via three independent methods--characteristic curve investigations, tissue virus concentration dynamics, and ultrastructural methods--the spread of VEE virus through the olfactory tract into the brain of immune mice. From these experiments it was concluded that in case of respiratory challenge VEE virus can enter the CNS of normal mice by both vascular and olfactory pathways, while in immune mice the main route is olfactory.
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