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Note 4 - Property and Equipment, Net (Tables)
6 Months Ended
Jun. 30, 2022
Notes Tables  
Property, Plant and Equipment [Table Text Block]
  

June 30,

  

December 31,

 
  

2022

  

2021

 

Computer equipment and software

 $142  $133 

Laboratory and manufacturing equipment

  496   460 

Furniture and fixtures

  27   26 

Leasehold improvements

  26   26 

Construction in progress

  82   74 

Property and equipment, gross

  773   719 

Less accumulated depreciation

  (569)  (537)

Property and equipment, net

 $204  $182