Note 6—Fixed Assets

The useful lives and balances of fixed assets at December 31, 2014 and 2013 consisted of the following:

	Useful Life	2014		2013
Computer software, computer equipment and office equipment	3 years	$	477,222	$	272,659
Laboratory equipment	5 years		1,837,504		1,452,669
Furniture and fixtures	5 years		40,349		40,349
Leasehold improvements	5 years		309,618		309,618
Website development	3 years		298,553		270,678
Projects in Progress			6,750		525,988

			2,969,996		2,871,961
Less — Accumulated depreciation and amortization			(2,196,217)		(2,027,355)
Total		$	773,779	$	844,606

Depreciation and amortization expense was $168,861 and $120,033, for the years ended December 31, 2014 and 2013, respectively. Fully depreciated assets of $8,200 were retired at December 31, 2014.