id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-306380-msk9p1yy	Lee, C.-W.	Evidence of genetic diversity generated by recombination among avian coronavirus IBV	2000		.txt	text/plain	2796	146	58	Phylogenetic analysis of selected regions of the genome of the DE072 serotype field isolates further support those results and indicate that isolates within the same serotype may have different amounts of nucleotide sequence similarity with each other in individual genes other than the S gene. Further, we conducted sequence analysis of six isolates of the DE072 serotype in order to determine if recombination is frequently occurring in this region in field isolates of IBV. We conducted phylogenetic analysis by dividing 3.8 kb of the 3 end of the genome among five IBV strains at the IG sequences. However, these 6 isolates had a much different level of nucleotide sequence similarity with each other in gene 3 and gene 4, and clustered randomly with other serotypes of IBV (Fig. 3) . Sequence analysis of gene 3, gene 4 and gene 5 of avian infectious bronchitis virus strain CU-T2 Sequence evidence for RNA recombination in field isolates of avian coronavirus infectious bronchitis virus	./cache/cord-306380-msk9p1yy.txt	./txt/cord-306380-msk9p1yy.txt