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Property and Equipment (Tables)
 12 Months Ended
Dec. 31, 2018
Property, Plant and Equipment [Abstract]  
Property and Equipment

Property and equipment consist of the following:

 

     December 31,  
     2018      2017  

Computer equipment

    $ 44,427      $ 33,584  

Furniture and fixtures

      341,582        301,509  

Scientific equipment

      3,658,209        3,494,866  

Leasehold improvements

      149,470        —    
  

 

 

     

 

 

  
     4,193,688        3,829,959  

Less accumulated depreciation

      (3,033,922 )       (2,692,788 ) 
  

 

 

     

 

 

  
   $ 1,159,766      $ 1,137,171