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Property and Equipment
9 Months Ended
Sep. 30, 2024
Property and Equipment  
Property and Equipment

7. Property and Equipment

Property and equipment are recorded at cost and depreciated using the straight-line method over the shorter of their estimated useful lives or remaining lease term, ranging generally from three to eight years. Expenditures for maintenance and repairs are charged to expense as incurred.

Property and equipment consist of the following:

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September 30, 

​

December 31, 

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2024

    

2023

Lab equipment

​

$

21,304,879

​

$

21,203,534

Leasehold improvements

​

 

2,325,999

​

 

2,827,289

Computers

​

 

886,037

​

 

850,211

Furniture and fixtures

​

 

277,882

​

 

277,882

Construction-in-process

​

 

206,061

​

 

9,414

Total

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25,000,858

​

 

25,168,330

Accumulated depreciation

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(10,940,924)

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(7,580,993)

Property and equipment, net

​

$

14,059,934

​

$

17,587,337

​

Depreciation expense was $1.2 million and $3.7 million for the three and nine months ended September 30, 2024, respectively, and $1.2 million and $3.4 million for the three and nine months ended September 30, 2023.