Condensed Balance Sheets (USD $)	Mar. 31, 2013	Dec. 31, 2012
Current Assets:
Cash and cash equivalents	$ 21,647,046	$ 7,861,524	[1]
Accounts receivable, net	169,403	179,956	[1]
Inventory	436,960	675,602	[1]
Prepaid expenses and other current assets	876,451	965,624	[1]
Total Current Assets	23,129,860	9,682,706	[1]
Property and equipment, net	8,495,801	7,349,531	[1]
Patents and trademarks, net	45,602	47,308	[1]
Deferred financing costs	79,877	106,141	[1]
Other assets	84,127	84,127	[1]
Total Assets	31,835,267	17,269,813	[1]
Current Liabilities:
Accounts payable (includes related parties of $59,750 and $59,689 as of March 31, 2013 and December 31, 2012, respectively)	1,085,037	1,850,102	[1]
Accrued expenses	887,314	956,541	[1]
Deferred placement revenue	230,779	171,726	[1]
Other current liabilities	60,596	40,811	[1]
Total Current Liabilities	2,263,726	3,019,180	[1]
Long Term Liabilities:
Deferred placement revenue	161,471	131,651	[1]
Loan payable	5,286,037
Warrant liability	547,150
Long-term interest payable	7,417
Deferred rent	137,859	143,772	[1]
Total Long Term Liabilities	6,139,934	275,423	[1]
Total Liabilities	8,403,660	3,294,603	[1]
COMMITMENTS, CONTINGENCIES and LITIGATION (Note 8)			[1]
Stockholders' Equity
Preferred stock - $.10 par value; authorized 10,000,000 shares; issued and outstanding: none			[1]
Common stock - $.001 par value; authorized 45,000,000 shares; issued and outstanding 43,037,144 shares at March 31, 2013 and 32,204,720 at December 31, 2012	43,037	32,205	[1]
Additional paid-in capital	172,100,055	156,142,873	[1]
Accumulated deficit	(148,711,485)	(142,199,868)	[1]
Stockholders' Equity	23,431,607	13,975,210	[1]
Total Liabilities and Stockholders' Equity	$ 31,835,267	$ 17,269,813	[1]

[1] Derived from the audited balance sheet as of December 31, 2012