id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-264884-ydkigome	Villarreal, Luis P.	The Widespread Evolutionary Significance of Viruses	2008-07-05		.txt	text/plain	23138	1203	47	For example, common structural motifs from phage to eukaryotic DNA viruses (T4 and herpesvirus) suggest very ancient links in virus evolution that span all domains of life (see below). On an evolutionary time-scale, the majority of viral lineages tend to exist as species-specifi c persistent (aka temperate, latent, and chronic) infections in which individual hosts will be colonized by mostly silent (asymptomatic) viruses for the duration of their life . It has distinct genetic, fi tness, and evolutionary characteristics that require intimate, host (tissue)-specifi c viral strategies and precise gene functions to attain stable maintenance in the presence of immunity and to allow biologically controlled reactivation. Thus, the phycodnaviruses appear to represent a basal but diverse viral lineage that has both acute and persistent lifestyle and have some clear relationships to most large eukaryotic DNA viruses and many phage.	./cache/cord-264884-ydkigome.txt	./txt/cord-264884-ydkigome.txt