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Leasehold Improvements and Equipment (Details) (USD $)
Jun. 30, 2012
Dec. 31, 2011
Leasehold Improvements And Equipment Details    
Laboratory equipment $ 2,415,463 $ 2,378,122
Leasehold improvements 403,971 403,971
Computer equipment 356,962 302,518
Furniture and fixtures 18,313 18,313
Office equipment 7,877 7,877
Construction in progress 107,557 149,086
Leasehold Improvements and Equipment-gross 3,310,143 3,259,887
Less accumulated depreciation 2,243,482 2,087,599
Leasehold Improvements and Equipment-net $ 1,066,661 $ 1,172,288