Consolidated Balance Sheets (USD $)	Jun. 30, 2012	Dec. 31, 2011
Current Assets:
Cash and cash equivalents	$ 3,111,342	$ 8,995,571
Cash restricted pursuant to letters of credit	407,463	250,000
Accounts receivable	3,552	37,065
Stock subscriptions receivable		6,667
Prepaid expenses and other current assets	218,409	274,208
Total current assets	3,740,766	9,563,511
Property and Equipment, at cost:
Computer equipment	332,287	298,290
Office and laboratory equipment (including assets under capitalized leases)	689,077	624,817
Furniture and fixtures	169,581	186,837
Manufacturing equipment	341,620	156,435
Leasehold improvements	187,264	187,264
Property and equipment, at cost	1,719,829	1,453,643
Less-Accumulated depreciation and amortization	(1,156,232)	(1,135,912)
Net property and equipment (including assets under capitalized leases)	563,597	317,731
Other Assets:
Intangible assets, net of accumulated amortization	9,625,000	9,625,000
Deposits and other assets	10,816	20,565
Total other assets	9,635,816	9,645,565
Total assets	13,940,179	19,526,807
Current Liabilities:
Accounts payable	683,672	365,298
Deferred revenue	123,721	123,708
Current portion of notes payable and capital lease obligation, net of discounts	2,405	2,288
Derivative warrant liability	392,536	1,035,337
Accrued expenses and other liabilities	742,979	965,832
Total current liabilities	1,945,313	2,492,463
Notes Payable and capital lease obligation, net of current portion and discounts	2,656	3,888
Deferred revenue, net of current portion		61,867
Total liabilities	1,947,969	2,558,218
Series C, $0.01 par value, authorized 10,000 shares, issued and outstanding 9,974.185 shares at June 30, 2012 and December 31, 2011	100	100
Series D, $0.01 par value, authorized 3,600,000 shares, issued and outstanding 3,006,000 shares at June 30, 2012 and December 31, 2011 (preference in liquidation of $3,006,000 at June 30, 2012)	30,060	30,060
Common Stock, $0.01 par value, authorized 150,000,000 shares, issued and outstanding 39,615,344 and 38,543,944 shares at June 30, 2012 and December 31, 2011, respectively	396,156	385,442
Additional paid-in capital	99,276,015	98,116,327
Common stock subscribed for but not paid for or issued, 0 and 33,333 shares at June 30, 2012 and December 31, 2011, respectively		6,667
Accumulated deficit	(87,710,121)	(81,570,007)
Total stockholders' equity	11,992,210	16,968,589
Total liabilities and stockholders' equity	$ 13,940,179	$ 19,526,807