id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-356176-1nwjjgul	Atherton, J. G.	The effect of ascorbic acid on infection of chick-embryo ciliated tracheal organ cultures by coronavirus	1978		.txt	text/plain	1753	117	61	Chick embryo tracheal organ cultures showed increased resistance to infection by a coronavirus after exposure to ascorbate, while chick respiratory epithelium and allantois-on-shell preparations showed no increase in resistance to infection by an influenza virus or a paramyxovirus. Titrations of avian infectious bronchitis virus were performed by inoculating 4 replicate chick-embryo tracheal organ culture tubes previously selected for ciliat activity, with dilutions of virus made in half-log steps, then continuing to incubate the preparations on a roller drum at 15 rev/hour at 37 ° C. However resistance of CETO cultures to IB virus infection rose with increasing ascorbic acid content (Table t and Fig. 1 ). Our results show t h a t aseorbic acid exerted no direct effect on the infectivity of a n y of the three viruses tested, nor did it affect the resistance of cells to infection by the 0 r t h o m y x o v i r u s (influenza) or the P a r a m y x o v i r u s (NDV).	./cache/cord-356176-1nwjjgul.txt	./txt/cord-356176-1nwjjgul.txt