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The mechanism of the shutoff of cellular protein synthesis in vaccinia virus-infected cells has been investigated by using in vitro systems. Purified vaccinia cores cause inhibition of endogenous mRNA translation in nonpreincubated reticulocyte lysates and Ehrlich ascites tumor cell-free systems.
Turnip yellow mosaic virus (TYMV) possesses a monopartite single-stranded (+) sense RNA genome in which the coat protein (cp) gene is 3' proximal and is expressed in vivo via a subgenomic RNA. Evidence is presented here that this subgenomic RNA is synthesized in vivo by internal initiation of
Rabies is enzootic in raccoons (Procyon lotor) in the eastern United States. Oral vaccination of free-ranging raccoons against rabies has the potential to control the disease in a principal reservoir and reduce the risk of rabies exposure among domestic animals and humans. Free-ranging animal