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Note 4 - Property and Equipment, Net
 9 Months Ended
Sep. 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):

 

   

September 30,

    

December 31,

  
   

2023

    

2022

  

Computer equipment and software

   $ 161     $ 161  

Laboratory and manufacturing equipment

     574       575  

Furniture and fixtures

     27       27  

Leasehold improvements

     26       26  

Property and equipment, gross

     788       789  

Less accumulated depreciation

     (674 )     (619 )

Property and equipment, net

   $ 114     $ 170  

 

Depreciation expense totaled $21,000 and $64,000 for the three and nine months ended September 30, 2023, respectively. Depreciation expense totaled $29,000 and $61,000 for the three and nine months ended September 30, 2022, respectively.