Property and Equipment

9 Months Ended

Sep. 30, 2013

Property Plant And Equipment [Abstract]

3. Property and Equipment

Property and equipment consists of the following:


	September 30, 2013			December 31, 2012
Computer equipment	$	2,172,535		$	2,003,706
Software		1,323,081			1,323,081
Furniture		599,650			599,650
Lab equipment		10,603,598			8,747,790
Office equipment		51,360			51,360
Leasehold improvements		4,893,770			4,881,706

Property and equipment		19,643,994			17,607,293
Less accumulated depreciation and amortization		(15,174,112	)		(14,339,497	)

Property and equipment, net	$	4,469,882		$	3,267,796

Depreciation and amortization expense for the three months ended September 30, 2013 and 2012 was $316,852 and $235,543, respectively, and $834,615 and $722,496 for the nine months ended September 30, 2013 and 2012, respectively.

- Definition

The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures.

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