Note 4 - Property and Equipment

Property and equipment consisted of the following:


	December 31,
	2012			2011
Leasehold improvements	$	758,126		$	758,126
Furniture and office equipment		234,018			234,018
Computer and other equipment		1,397,012			1,409,580
		2,389,156			2,401,724
Less accumulated depreciation		(1,905,180	)		(1,613,058	)
Property and equipment, net	$	483,976		$	788,666

Depreciation expense for the years ended December 31, 2012 and 2011 was $0.3 million, $0.5 million, respectively. Depreciation and amortization expense for the year ended December 31, 2010 was $5.7 million. The Company recorded an impairment charge in 2010 of approximately $3.8 million associated with the closing of the Canadian operation upon the expiration of the Protexia® contract and of certain patents of approximately $0.8 million. These charges are included in depreciation and amortization in the accompanying 2010 consolidated statement of operations.

- Definition

The entire disclosure for long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. This disclosure may include property plant and equipment accounting policies and methodology, a schedule of property, plant and equipment gross, additions, deletions, transfers and other changes, depreciation, depletion and amortization expense, net, accumulated depreciation, depletion and amortization expense and useful lives, income statement disclosures, assets held for sale and public utility disclosures.

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