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Property and Equipment, Net (Tables)
12 Months Ended
Dec. 31, 2020
Property, Plant and Equipment [Abstract]  
Schedule of property and equipment
   December 31, 
   2020   2019 
Cost:        
         
Computers and software  $449   $389 
Laboratory equipment   3,947    3,356 
Furniture and office equipment   152    147 
Leasehold improvements   4,478    4,353 
           
    9,026    8,245 
           
Accumulated depreciation   (3,136)   (2,124)
           
Depreciated cost  $5,890   $6,121