id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-313126-7hrjzapj	Chen, Fangzhou	Decline of transmissible gastroenteritis virus and its complex evolutionary relationship with porcine respiratory coronavirus in the United States	2019-03-08		.txt	text/plain	4467	211	44	Nineteen complete TGEV genomes and a single strain of porcine respiratory coronavirus (PRCV) from the US were generated and compared to historical strains to investigate the evolution of these endemic coronaviruses. The "variant" genotype shared similar unique deletions and amino acid changes with the recent PRCV strain identified in this study, suggesting a recombination event occurred between the ''variant'' TGEV and PRCV. Complete genomic sequences, a key residue in the spike protein and deletions in nonstructural protein 3b of US strains of the virulent and attenuated coronaviruses, transmissible gastroenteritis virus and porcine respiratory coronavirus	./cache/cord-313126-7hrjzapj.txt	./txt/cord-313126-7hrjzapj.txt