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Submitted on: 18 March 2010.
Revised on: 27 June 2010.
Accepted on: 09 July 2010.
___________________BIOORGANIC CHEMISTRY---ACADEMIC PRESS INC ELSEVIER SCIENCE
Submitted on: 01 February 1999.
Revised on: 22 April 1999.
Accepted on: 20 May 1999.
___________________BIOORGANIC CHEMISTRY---ACADEMIC PRESS INC ELSEVIER SCIENCE
Submitted on: 23 December 2010.
Revised on: 19 March 2011.
Accepted on: 14 April 2011.
___________________BIOORGANIC CHEMISTRY---ACADEMIC PRESS INC ELSEVIER SCIENCE
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