| http://www.w3.org/ns/prov#value | - Research and Development Expenses The following table represents our research and development expenses for the years ended December 31, 2012 and 2011: Year Ended December 31, 2012 2011 % Change $ 6,161,548 $ 8,290,550 (26)% Research and development expenses consist primarily of salaries and other personnel-related expenses, laboratory supplies and other expenses related to the design, development,
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