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chenxiaojun2003

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The desired phase components were prepared in 10ml of graduated tubes by adding 2ml polyethylene glycol solution (22% w/v in 0.02M Tris¨CHCl buVer, pH 6.5) and 2ml of salt solution (10% K2HPO4 w/v and 14% w/v
NaCl in 0.02M Tris¨CHCl buVer, pH 6.5). After vortexing for a minute, two distinct phases were formed within 5min at 25 ¡ãC.
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