id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-338083-77re4l0w	Bolin, Steven R.	Origination and consequences of bovine viral diarrhea virus diversity	2005-03-04		.txt	text/plain	6748	329	43	The genetic diversity that occurs among isolates of BVDV is characteristic of RNA viruses that exist in nature as quasispecies (a swarm of viral mutants). However, altered base sequence in this region of the viral genome has been identified after passage of the virus in cell culture, and has been detected in viral RNA that was extracted from tissues of an infected animal [20, 21] . The selection of the antigenic variants likely occurred during the acute infection of the dams of those PI cattle and resulted in transplacental transmission of slightly different BVDV to a group of fetuses. Genetic and antigenic variability in bovine viral diarrhea virus (BVDV) isolates from Belgium Pathogenesis of primary respiratory disease induced by isolates from a new genetic cluster of bovine viral diarrhea virus type I Clinical and immunologic responses of vaccinated and unvaccinated calves to infection with a virulent type-II isolate of bovine viral diarrhea virus	./cache/cord-338083-77re4l0w.txt	./txt/cord-338083-77re4l0w.txt