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Submitted on: 12 June 2015.
Revised on: 15 September 2015.
Accepted on: 15 October 2015.
___________________JOURNAL OF NANOBIOTECHNOLOGY---BMC
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Submitted on: 24 November 2000.
Revised on: 16 February 2001.
Accepted on: 14 April 2001.
___________________JOURNAL OF NANOBIOTECHNOLOGY---BMC
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