id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-022674-90g0461f	Hurst, Christon J.	Detecting Viruses in Water	1989-09-01		.txt	text/plain	7260	398	39	Subsequent recovery of the adsorbed viruses can occur either by dissolving the filter material, if it is composed of alginate,"" or by exposing the adsorbent to a volume of eluant that is smaller than the original water sample and facilitates a reversal of the virus adsorption process. Of the many different types and configurations of virus adsorbents, those now preferred for use in recovering viruses from large volumes of water are wound cartridge filters*' and pleated cartridge filter@ based on either glass fiber or nylon, including types that are positively charged, and columns of glass powder.26 Also of interest is the use of sheet filter material that has been modified in situ either by a precipitation of metal hydroxides within the filter ma-trix2" or by coating the filter with cationic 74 RESEARCHANDTECHNOLOGY Cultures of mammalian cells were prepared using a laminar-flow filtered air hood.	./cache/cord-022674-90g0461f.txt	./txt/cord-022674-90g0461f.txt