Condensed Consolidated Balance Sheets (USD $)	Jun. 30, 2012	Dec. 31, 2011
Current assets
Cash and cash equivalents	$ 4,198,890	$ 4,911,350
Trade accounts receivable, net of allowance of $0 and $8,174	209,506	286,065
Other receivables	17,648	293
Prepaid research expenses		209,780
Prepaid expenses and other assets	55,168	120,427
Total current assets	4,481,212	5,527,915
Property and equipment, net of of accumulated depreciation of $299,445 and $265,502	59,138	91,482
Patents, net of accumulated amortization of $0 and $2,146	0
Deposit	25,625	35,625
Total assets	4,565,975	5,655,022
Current liabilities
Accounts payable and accrued expenses	180,096	269,996
Accrued salaries and benefits	354,166	549,815
Deferred revenue	105,275	72,871
Total current liabilities	639,537	892,682
Deferred rent	40,423	47,675
Total liabilities	679,960	940,357
Commitments and contingencies
Stockholders' equity
Preferred stock, $0.01 par value, 2,000,000 shares authorized; 5,250 series B issued and 1 outstanding at June 30, 2012 and December 31, 2011
Common stock, $0.01 par value, 50,000,000 shares authorized; 4,167,820 and 3,103,004 issued, 4,159,777 and 3,094,461 outstanding at June 30, 2012 and December 31, 2011, respectively	41,678	31,030
Paid-in capital in excess of par value	43,359,538	42,295,306
Treasury stock, 8,043 shares	(464,786)	(464,786)
Accumulated deficit	(39,050,415)	(37,146,885)
Total stockholders' equity	3,886,015	4,714,665
Total liabilities and stockholders' equity	$ 4,565,975	$ 5,655,022