Consolidated Statements of Operations (USD $)	12 Months Ended			150 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013
Grant revenue	$ 2,417,550	$ 2,657,327	$ 4,899,885	$ 25,386,569
Operating expenses:
Research and development	2,914,878	3,043,522	4,276,375	31,589,076
General and administrative	1,792,160	1,752,765	2,972,555	21,192,584
	4,707,038	4,796,287	7,248,930	52,781,660
Loss from operations	(2,289,488)	(2,138,960)	(2,349,045)	(27,395,091)
Other income (expense):
Interest income	4,545	3,820	2,219	348,675
Interest expense				(5,669)
	4,545	3,820	2,219	343,006
Net loss	$ (2,284,943)	$ (2,135,140)	$ (2,346,826)	$ (27,052,085)
Basic and diluted:
Loss per common share (in Dollars per share)	$ (0.11)	$ (0.12)	$ (0.15)	$ (2.21)
Weighted average shares outstanding (in Shares)	21,212,327	18,315,669	15,735,541	12,241,449