- Correspondence to: Professor Sheikh Riazuddin National Centre of Excellence in Molecular Biology, University of the Punjab, 87 West Canal Bank Road, Thokar Niaz Baig, Lahore 53700, Pakistan;
- Received November 24, 2005
- Accepted January 24, 2006
- Revised January 19, 2006
- First published February 3, 2006.
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