id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-305684-ipeup5mp	Chen, Yuqiu	Identification and molecular characterization of a novel serotype infectious bronchitis virus (GI-28) in China	2016-12-16		.txt	text/plain	5146	311	58	In this study, based on the results of S1 sequence analysis and virus cross-neutralization tests, IBV strain ck/CH/LGX/111119 was found to be genetically and antigenically different from other known IBV types, representing not only a novel genotype, but also a novel serotype (designated as GI-28). Further studies by complete genomic analysis showed that strain ck/CH/LGX/111119 may have originated from recombination events involving LX4 genotype IBVs and an as-yet-unidentified IBV donating a S1 gene, or from the result of accumulation of mutations and selections, especially in the S1 gene, from a LX4 genotype virus. In addition, the S1 gene sequences of 93 IBV reference strains with different genotypes were also selected for comparison in this study ( Fig. 1 ) (Valastro et al., 2016) . Genotyping based on the phylogenetic analysis of the S1 gene from our ck/CH/LGX/111119 and 99 reference IBV strains assigned the viruses into different clusters (Fig. 1) .	./cache/cord-305684-ipeup5mp.txt	./txt/cord-305684-ipeup5mp.txt