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  ____       ___     ______      ___      _____   
 |  _ \\    / _ \\  |      \\   / _ \\   /  ___|| 
 | |_| ||  / //\ \\ |  --  //  / //\ \\ | // __   
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 `-` --`  `-`   `-` `------`  `-`   `-`   `---`

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Text this: Chromatin compaction under mixed salt conditions : opposite effects of sodium and potassium ions on nucleosome array folding