Note 4 - Equipment (Detail) - Summary of gross equipment costs: (USD $)	Dec. 31, 2012	Dec. 31, 2011
Propert, plant, and equipment	$ 2,762,462	$ 2,596,324
Less accumulated depreciation	(1,775,909)	(1,512,120)
Equipment, net	986,553	1,084,204
Lab Equipment [Member]
Propert, plant, and equipment	1,903,533	1,739,217
Computer Equipment [Member]
Propert, plant, and equipment	335,264	357,316
Furniture and Fixtures [Member]
Propert, plant, and equipment	$ 523,665	$ 499,791

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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Gross amount of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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