CORD-19:bd51ebd1d7d5c9161290c1a89d4e3fb7434db6b5 / 9062-9319 JSON TXT

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Id	Subject	Object	Predicate	Lexical cue
TextSentencer_T50	0-257	Sentence	denotes	Virus-like particles were precipitated from culture medium 48h after transfection using 10% polyethylene glycol and 2.2% w/v NaCl, then further purified by 10%-30% sucrose density gradient ultracentrifugation as described previously (Neuman et al., 2008a) .

Id	Subject	Object	Predicate	Lexical cue
T50	0-257	Sentence	denotes	Virus-like particles were precipitated from culture medium 48h after transfection using 10% polyethylene glycol and 2.2% w/v NaCl, then further purified by 10%-30% sucrose density gradient ultracentrifugation as described previously (Neuman et al., 2008a) .