Quarterly report pursuant to Section 13 or 15(d)

2. Summary of Significant Accounting Policies (Tables)

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2. Summary of Significant Accounting Policies (Tables)
6 Months Ended
Jun. 30, 2016
Accounting Policies [Abstract]  
Antidilutive shares
    June 30, 2016     June 30, 2015  
Options     23,724,256       21,681,512  
Warrants     9,342,892       6,308,754  
Common stock issuable upon conversion of notes payable     2,401,667       –  
Total     35,468,815       27,990,266