Condensed Consolidated Statements Of Operations (USD $)	3 Months Ended		6 Months Ended		91 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011
Revenues
Grant revenues	$ 0	$ 0	$ 0	$ 0	$ 1,623,160
Operating expenses
Research and development	803,858	613,199	1,295,432	1,133,161	40,087,581
General and administrative	1,173,536	1,358,870	2,461,421	2,319,495	35,073,374
Total operating expenses	1,977,394	1,972,069	3,756,853	3,452,656	75,160,955
Loss from operations	(1,977,394)	(1,972,069)	(3,756,853)	(3,452,656)	(73,537,795)
Change in fair value of derivative liabilities	212,401	1,269,610	300,571	1,706,980	10,348,981
Gain on warrant exchange	0	0	0	0	473,872
Interest income	3,136	12,878	8,398	17,710	1,574,252
Interest expense	(1,449)	(743)	(4,062)	(2,174)	(7,120,562)
Net loss from continuing operations	(1,763,306)	(690,324)	(3,451,946)	(1,730,140)	(68,261,252)
Net loss from discontinued operations	0	0	0	0	(22,561,220)
Gain on sale of business unit					6,408,603
Net loss	$ (1,763,306)	$ (690,324)	$ (3,451,946)	$ (1,730,140)	$ (84,413,869)
Loss per common share - basic and diluted	$ (0.02)	$ (0.01)	$ (0.04)	$ (0.03)
Weighted average common shares outstanding	83,097,967	77,852,154	83,097,967	68,959,510