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Property and Equipment
 12 Months Ended
Dec. 31, 2019
Property and Equipment  
Property and Equipment

(4) Property and Equipment

Property and equipment consisted of the following (in thousands):

 

 

 

 

 

 

 

 

 

 

 

 

 

December 31, 

Asset description

    

Estimated useful lives

    

2019

    

2018

Lab equipment

 

5 Years

 

$

2,250

 

$

2,203

Furniture and fixtures

 

5 Years

 

 

112

 

 

110

Computer equipment and software

 

3 Years

 

 

508

 

 

398

Leasehold improvements

 

Lesser of useful life or lease term

 

 

1,328

 

 

1,290

Total

 

  

 

 

4,198

 

 

4,001

Less accumulated depreciation and amortization

 

  

 

 

(3,521)

 

 

(3,243)

Property and equipment, net

 

  

 

$

677

 

$

758

The cost of property and equipment at both December 31, 2019 and 2018 includes $0.2 million of equipment located at Aroa. Depreciation expense was $0.3 million,  $0.5 million and $0.8 million for the years ended December 31, 2019, 2018 and 2017, respectively.