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Property and Equipment
12 Months Ended
Dec. 31, 2014
Property, Plant and Equipment [Abstract]  
Property and Equipment
Property and Equipment
Property and equipment consisted of the following as of: 
($ in thousands)
December 31,
2014
 
December 31,
2013
Laboratory equipment
$
1,279

 
$
1,045

Computer equipment and software
206

 
179

Furniture and fixtures
49

 
15

Leasehold improvements
772

 
448

Construction-in-process
343

 
749

 
2,649

 
2,436

Less: Accumulated depreciation
(1,051
)
 
(735
)
Property and equipment, net
$
1,598

 
$
1,701


Depreciation expense was approximately $0.3 million, $0.3 million and $0.3 million for the years ended December 31, 2014, 2013 and 2012, respectively.