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Note 4 - Property and Equipment, Net
 9 Months Ended
Sep. 30, 2021
Notes to Financial Statements  
Property, Plant and Equipment Disclosure [Text Block]

4.

Property and equipment, net

 

Property and equipment consist of the following:

 

  

December 31, 2020

  

September 30, 2021

 
    $    $ 
      

(Unaudited)

 
         

Office equipment

  181   213 

Laboratory equipment

  121   127 

Motor vehicles

  24   24 

Leasehold improvements

  116   117 
         
   442   481 

Less: accumulated depreciation

  (258)  (312)
         

Property and equipment, net

  184   169 

 

Depreciation expenses for the three and nine months ended September 30, 2020 were $22 and $54, respectively. Depreciation expenses for the three and nine months ended September 30, 2021 were $17 and $54, respectively.