Statements of Cash Flows (USD $)	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Operating activities:
Net loss	$ (749,138)	$ (5,146,347)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	5,787	6,920
Non-cash share-based compensation	151,543	144,997
Changes in operating assets and liabilities:
Grants receivable	173,953	(4,195)
Prepaid expenses and other current assets	10,842	302,090
Other assets	0	5,752
Accounts payable	110,609	(126,097)
Accrued expenses	(187,645)	(23,945)
Unearned revenue	400,000	0
Net cash used in operating activities	(84,049)	(4,840,825)
Investing activities:
Purchase of property and equipment	0	(1,084)
Net cash used in investing activities	0	(1,084)
Financing activities:
Net proceeds from issuance of common stock	0	1,576,016
Net cash provided by financing activities	0	1,576,016
Net decrease in cash and cash equivalents	(84,049)	(3,265,893)
Cash and cash equivalents at beginning of period	116,092	3,790,352
Cash and cash equivalents at end of period	32,043	524,459
Supplemental Disclosure of Non-Cash Operating Activities:
Issuance of common stock for payment of accounts payable	$ 55,182	$ 0