Estimated

 

December 31,

 

 

 

Useful Lives

 

2015

 

2016

 

Laboratory equipment

    

7

    

$

6,022,585

    

$

6,666,506

 

Office equipment and software

 

3 – 7

 

 

1,271,847

 

 

1,347,768

 

Leasehold improvements

 

7

 

 

408,153

 

 

424,176

 

Assets not in service

 

 

 

 

53,378

 

 

19,000

 

  

 

 

 

 

7,755,963

 

 

8,457,450

 

Less accumulated depreciation

 

 

 

 

(4,357,565)

 

 

(5,252,373)

 

 

 

 

 

$

3,398,398

 

$

3,205,077