id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-022348-w7z97wir	Sola, Monica	Drift and Conservatism in RNA Virus Evolution: Are They Adapting or Merely Changing?	2007-09-02		.txt	text/plain	10892	671	56	An analysis of proteins derived from complete potyvirus genomes, positive-stranded RNA viruses, yielded highly significant linear relationships. Under the rubric replication, a virus could vary to increase its fitness, exploit different target cells or evade adaptive immune responses. For a given virus, different protein sequence sets were compared to a given reference such as RT in the case of HIV/SIV. Although these data were derived from completely sequenced primate immunodeficiency viral genomes, analyses on larger data sets, such as p17 Gag/p24 Gag or gp120/gp41, yielded relative values that differed from those given in Table 6 .1 by at most 14%. An analysis of proteins derived from complete potyvirus genomes, positive-stranded RNA viruses, yielded highly significant linear relationships (Table 6 .1). In the clear cases where genetic variation is exploited by RNA viruses, it is used to overcome barriers to transmission set up by the host population, e.g. herd immunity.	./cache/cord-022348-w7z97wir.txt	./txt/cord-022348-w7z97wir.txt