CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	12 Months Ended		166 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2012
Revenues:
Grant revenue	$ 1,342,200	$ 2,071,000	$ 12,762,700
Collaboration revenue			2,283,600
Other			1,123,500
Total revenues	1,342,200	2,071,000	16,169,800
Operating expenses:
Research and development	5,388,600	3,678,200	26,124,900
Acquired in-process research and development			7,523,200
General and administrative	4,997,000	4,957,700	27,118,400
Total operating expenses	10,385,600	8,635,900	60,766,500
Loss from operations	(9,043,400)	(6,564,900)	(44,596,700)
Other expenses, net:
Interest expense, net	(1,893,200)	(3,119,400)	(9,441,500)
Change in put and note extension option and warrant liabilities	(78,000)	203,900	418,500
Loss on early extinguishment of debt	(1,193,500)		(1,193,500)
Other income	200	(200)	47,500
Loss before income taxes	(12,207,900)	(9,480,600)	(54,765,700)
Income taxes	(1,600)	(1,600)	(16,800)
Net loss	$ (12,209,500)	$ (9,482,200)	$ (54,782,500)
Basic and diluted net loss per common share	$ (0.83)	$ (1.81)
Weighted average shares used in computing basic and diluted net loss per common share	14,736,651	5,241,110