Quarterly report pursuant to Section 13 or 15(d)

9. Share-Based Expense (Tables)

v3.19.2
9. Share-Based Expense (Tables)
6 Months Ended
Jun. 30, 2019
Share-based Payment Arrangement [Abstract]  
Share-based expense
    Three Months Ended June 30,     Six Months Ended June 30,  
    2019     2018     2019     2018  
Research and development expenses   $ 31,660     $ 109,426     $ 43,078     $ 169,771  
General and administrative expenses     217,494       336,183       440,016       682,032  
    $ 249,154     $ 445,609     $ 483,094     $ 851,803