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)
3 Months Ended
Mar. 31, 2016
Accounting Policies [Abstract]  
Antidilutive shares
    March 31, 2016     March 31, 2015  
Options     23,184,256       21,761,512  
Warrants     8,885,242       5,392,087  
Common stock issuable upon conversion of notes payable     3,370,400       –  
Total     35,439,898       27,153,599