Annual report pursuant to Section 13 and 15(d)

Property, Equipment, and Leasehold Improvements

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Property, Equipment, and Leasehold Improvements
 12 Months Ended
Dec. 31, 2017
Property, Plant and Equipment [Abstract]  
Property, Equipment, and Leasehold Improvements

5. Property, Equipment, and Leasehold Improvements

Property, equipment, and leasehold improvements, at cost, consisted of:

 

     December 31,  
     2017      2016  

Computer equipment

    $ 19,691      $ 19,691  

Furniture

      434,697        434,697  

Lab equipment

      1,710,881        1,710,881  

Leasehold improvements

      1,855,004        1,855,004  
  

 

 

     

 

 

  
     4,020,273      4,020,273  

Less: accumulated depreciation and amortization

      (2,926,370 )       (2,739,121 ) 
  

 

 

     

 

 

  
     $1,093,903      $1,281,152  
  

 

 

     

 

 

  

Depreciation expense was $187,249, $451,008 and $537,344 for the years ended December 31, 2017, 2016 and 2015, respectively.