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Property and Equipment
9 Months Ended
Sep. 30, 2021
Property and Equipment  
Property and Equipment

4. Property and Equipment

Property and equipment, net consists of the following:

September 30, 

December 31, 

    

2021

    

2020

Furniture and fixtures

$

345,712

$

345,712

Laboratory equipment

 

1,406,346

 

1,446,596

Office equipment

 

17,762

 

16,755

Computer equipment

 

303,338

 

327,776

Leasehold improvements

616,133

616,133

Property and equipment

 

2,689,291

 

2,752,972

Less accumulated depreciation

 

(2,261,253)

 

(2,132,299)

Property and equipment, net

$

428,038

$

620,673

Depreciation expense was $67,385 and $66,527 for the three months ended September 30, 2021 and 2020, respectively, and $202,957 and $202,399 for the nine months ended September 30, 2021 and 2020, respectively.