CONDENSED STATEMENTS OF CASH FLOWS (USD $)	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (2,644,540)	$ (2,467,978)
Income from discontinued operations		158,366
Loss from continuing operations	(2,644,540)	(2,626,344)
Adjustments to reconcile loss from continuing operations to net cash used in operating activities:
Depreciation and amortization	168,082	202,897
Stock-based compensation expense	96,131	130,966
Changes in operating assets and liabilities:
Accounts receivable	24,654	(30,390)
Federal grant receivable		117,946
Receivable from related party	(2,254)	(99,757)
Inventory	19,390	20,509
Prepaid expenses and other current assets	(26,209)	7,306
Accounts payable	(10,198)	(46,602)
Accrued expenses	12,184	(217,417)
Deferred revenue	146,098	246,424
Net cash used in operating activities of discontinued operations		(5,875)
Net cash used in operating activities	(2,216,662)	(2,300,337)
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital additions	(5,000)	(1,681)
Net cash used in investing activities	(5,000)	(1,681)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of notes payable	1,316,255
Proceeds from private placement of preferred stock	3,000,000
Proceeds from employee stock purchase plan	8,810	16,965
Net cash provided by financing activities	4,325,065	16,965
Net increase (decrease) in cash and cash equivalents	2,103,403
Cash and cash equivalents, beginning of period	1,728,222	3,999,029
Cash and cash equivalents, end of period	3,831,625	1,713,976
Supplemental disclosures of cash flow information:
Cash paid for interest	204,884	178,260
Supplemental disclosures of non-cash investing and financing activities:
Warrants issued in connection with preferred stock financing	$ 104,907