Condensed Statements of Operations and Comprehensive Income (Loss) (USD $)	3 Months Ended		6 Months Ended		92 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013
Revenues
Products	$ 166,271	$ 62,718	$ 341,956	$ 72,952	$ 2,270,219	[1]
Government contracts	58,780	91,833	118,032	523,165	9,785,081
Total Revenues	225,051	154,551	459,988	596,117	12,055,300
Costs and Expenses
Research and development	5,590,336	4,830,139	10,910,565	9,220,463	111,324,801
Selling, general and administrative	1,610,822	1,186,213	2,853,413	2,680,324	43,683,831
Impairment loss	0	0	0	0	83,171,090
Total Costs and Expenses	7,201,158	6,016,352	13,763,978	11,900,787	238,179,722
Loss from Operations	(6,976,107)	(5,861,801)	(13,303,990)	(11,304,670)	(226,124,422)
Other Income/(Expense), net	(107,017)	(44,066)	(213,485)	(111,702)	831,613
Net Loss	(7,083,124)	(5,905,867)	(13,517,475)	(11,416,372)	(225,292,809)
Deemed dividend on Preferred Stock and accretion of warrants	(597,259)	0	(597,259)	0	(597,259)
Net Loss applicable to common stockholders	(7,680,383)	(5,905,867)	(14,114,734)	(11,416,372)	(225,890,068)
Net Loss Per Share (Basic and diluted) (in dollars per share)	$ (0.15)	$ (0.14)	$ (0.27)	$ (0.28)
Weighted Average Common Shares Outstanding (Basic and diluted) (in shares)	52,931,642	41,172,019	52,137,145	40,861,375
Revenue from related parties					$ 404,680

[1] Includes related party product revenue of $404,680. See Note 10.