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Property and Equipment
12 Months Ended
Dec. 31, 2013
Property, Plant and Equipment [Abstract]  
Property, Plant, and Equipment and Intangible Assets [Text Block]
(5)
Property and Equipment
 
Property and equipment consisted of the following:
 
 
 
December 31,
 
 
 
2013
 
2012
 
Lab and office equipment
 
$
36,755
 
$
35,549
 
Computer equipment and software
 
 
960,044
 
 
960,044
 
Furniture and fixtures
 
 
51,404
 
 
51,404
 
 
 
 
1,048,203
 
 
1,046,997
 
Less accumulated depreciation
 
 
(1,019,409)
 
 
(997,642)
 
 
 
$
28,794
 
$
49,355
 
 
Depreciation and amortization expense for the years ended December 31, 2013 and 2012 was $22,000 and $43,000.