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Condensed Consolidated Statements of Operations (Unaudited) (USD $)
 3 Months Ended 153 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2014
Grant revenue $ 157,340 $ 797,040 $ 25,543,909
Operating expenses:      
Research and development 402,860 881,988 31,991,936
General and administrative 371,802 612,943 21,564,386
Total operating expenses 774,662 1,494,931 53,556,322
Loss from operations (617,322) (697,891) (28,012,413)
Other income (expense):      
Interest income 1,404 1,094 350,079
Interest expense     (5,669)
Total other income 1,404 1,094 344,410
Net loss $ (615,918) $ (696,797) $ (27,668,003)
Basic and diluted:      
Loss per common share (in Dollars per share) $ (0.02) $ (0.03) $ (2.21)
Weighted average shares outstanding (in Shares) 24,765,307 20,166,240 12,502,908