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, 2015
Accounting Policies [Abstract]  
Antidilutive shares
    March 31, 2015     March 31, 2014  
Options     21,761,512       20,254,908  
Warrants     5,392,087       7,251,050  
Total     27,153,599       27,505,958