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PROPERTY AND EQUIPMENT
 12 Months Ended
Dec. 31, 2016
PROPERTY AND EQUIPMENT  
PROPERTY AND EQUIPMENT

4. PROPERTY AND EQUIPMENT

 

Property and equipment, net consisted of the following:

 

 

 

 

 

 

 

 

 

 

    

2016

    

2015

 

Computer software and hardware

 

$
606

 

$
562

 

Research and lab equipment

 

 
1,895

 

 
1,874

 

Leasehold improvements

 

 
431

 

 
392

 

Office equipment

 

 
796

 

 
792

 

Less accumulated depreciation and amortization

 

 
(3,218)

 

 
(2,682)

 

Property and equipment, net

 

$
510

 

$
938

 

 

Depreciation and amortization expense for the years ended December 31, 2016,  2015, and 2014 was $536,  $672, and $735, respectively. Maintenance and repairs are charged to expense as incurred and any additions or improvements are capitalized. The Company had no disposals for the years ended December 31, 2016 and 2015.