id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-310372-qc6941pm	Ji, Jun	Phylogenetic distribution and predominant genotype of the avian infectious bronchitis virus in China during 2008-2009	2011-04-22		.txt	text/plain	3554	169	47	The genetic characterization of recent IBV field isolates in China was performed by sequencing the whole S1 genes, sequence alignment and phylogenetic analysis compared with other reference strains. The results of virus recovery in chicks indicated 87.5% (70/80) isolates caused serious kidney lesions, which were presented with swollen specked kidney and distended ureters filled with uric acid were nephropathogenic type, and the other ten isolates in the study caused respiratory system signs, which were consistent with the clinical record of each strain (Table 1) . In the present study, nucleotide and derived amino acid sequences of S1 protein genes of the 80 field strains were aligned and compared to the representative strains, to determine the relationship of circulating field isolates, vaccine strains and previously described variant strains. Isolation and genetic analysis revealed no predominant new strains of avian infectious bronchitis virus circulating in South China during	./cache/cord-310372-qc6941pm.txt	./txt/cord-310372-qc6941pm.txt