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Note 4 - Property and Equipment, Net
 6 Months Ended
Jun. 30, 2023
Notes to Financial Statements  
Property, Plant and Equipment Disclosure [Text Block]

(4)

Property and Equipment, Net

 

   

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

 

   

June 30,

    

December 31,

  
   

2023

    

2022

  

Computer equipment and software

   $ 174     $ 161  

Laboratory and manufacturing equipment

     574       575  

Furniture and fixtures

     27       27  

Leasehold improvements

     26       26  

Property and equipment, gross

     801       789  

Less accumulated depreciation

     (662 )     (619 )

Property and equipment, net

   $ 139     $ 170  

 

   

Depreciation expense totaled $21,000 and $43,000 for the three and six months ended June 30, 2023, respectively. Depreciation expense totaled $16,000 and $32,000 for the three and six months ended June 30, 2022, respectively.