CONDENSED BALANCE SHEETS (USD $)	Sep. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 1,014,764	$ 3,999,029
Trade accounts receivable	76,367	36,960
Federal grant receivable		117,946
Receivables from related party	36,960	14,657
Inventory	75,534	117,849
Prepaid expenses	235,204	266,349
Other current assets		200,000
Total current assets	1,438,829	4,752,790
Fixed assets, net	348,471	554,172
Intangible assets, net	543,448	630,037
Other assets	38,001	38,001
Total assets	2,368,749	5,975,000
Current liabilities:
Accounts payable	383,089	509,647
Accrued expenses	249,354	443,255
Deferred revenue	791,668	515,953
Current portion of long-term debt	11,000,000
Liabilities of discontinued operations		164,241
Total current liabilities	12,424,111	1,633,096
Convertible long-term debt		11,000,000
Total liabilities	12,424,111	12,633,096
Commitments and contingencies (Note 8)
Stockholders' deficit
Convertible preferred stock, $0.001 par value - 6,000,000 shares authorized; 5,000,000 shares of Series A issued and outstanding at September 30, 2011 and December 31, 2010; aggregate liquidation preference of $18,000,000 at September 30, 2011	5,000	5,000
Common stock, $0.001 par value - 100,000,000 shares authorized; 36,684,256 and 36,594,799 shares issued and outstanding at September 30, 2011 and December 31, 2010, respectively	36,684	36,594
Additional paid-in capital	91,056,873	90,851,709
Accumulated deficit	(101,153,919)	(97,551,399)
Total stockholders' deficit	(10,055,362)	(6,658,096)
Total liabilities and stockholders' deficit	$ 2,368,749	$ 5,975,000