Submitted on: 12 June 2013.
Revised on: 27 September 2013.
Accepted on: 31 October 2013.
___________________Chemical Biology Letters---SCIENCEIN PUBLICATIONS
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Submitted on: 26 August 2003.
Revised on: 30 October 2003.
Accepted on: 23 November 2003.
___________________Chemical Biology Letters---SCIENCEIN PUBLICATIONS
Submitted on: 16 September 2006.
Revised on: 08 October 2006.
Accepted on: 23 November 2006.
___________________Chemical Biology Letters---SCIENCEIN PUBLICATIONS
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