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Submitted on: 27 June 2000.
Revised on: 19 August 2000.
Accepted on: 10 October 2000.
___________________Cell Reports Physical Science---CELL PRESS
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Submitted on: 16 February 2002.
Revised on: 12 May 2002.
Accepted on: 23 June 2002.
___________________Cell Reports Physical Science---CELL PRESS
Submitted on: 17 May 2006.
Revised on: 08 September 2006.
Accepted on: 10 October 2006.
___________________Cell Reports Physical Science---CELL PRESS
Submitted on: 24 November 2011.
Revised on: 02 February 2012.
Accepted on: 01 March 2012.
___________________Cell Reports Physical Science---CELL PRESS
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Submitted on: 26 December 2003.
Revised on: 12 April 2004.
Accepted on: 24 May 2004.
___________________Cell Reports Physical Science---CELL PRESS
Submitted on: 18 January 2014.
Revised on: 14 April 2014.
Accepted on: 04 June 2014.
___________________Cell Reports Physical Science---CELL PRESS
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