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Property and Equipment, net
 12 Months Ended
Dec. 31, 2021
Property, Plant and Equipment [Abstract]  
Property and Equipment, net Property and Equipment, net
Property and equipment, net consisted of the following (in thousands):
December 31,
20212020
Laboratory equipment$7,947 $6,540 
Leasehold improvements1,618 947 
Construction-in-progress38 300 
Computer equipment and software22 22 
Total property and equipment9,625 7,809 
Less: Accumulated depreciation(5,019)(3,488)
Total property and equipment, net$4,606 $4,321 
Depreciation expense during the years ended December 31, 2021, 2020 and 2019 was $1.5 million, $1.3 million, $1.1 million, respectively.