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Condensed Consolidated Statements of Operations (USD $)
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Income Statement [Abstract]    
Revenues $ 167,787 $ 598,252
Costs and expenses:    
Research and development 2,829,299 4,952,260
General and administrative 1,912,951 1,046,608
Total costs and expenses 4,742,250 5,998,868
Loss from operations (4,574,463) (5,400,616)
Interest expense (5,041) (241,316)
Interest income 36,220 3,555
Net loss $ (4,543,284) $ (5,638,377)
Net loss per common share:    
Basic & Diluted $ (0.17) $ (0.39)
Weighted average number of common shares:    
Basic & Diluted 26,475,907 14,599,612