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NET LOSS PER SHARE (Tables)
3 Months Ended
Mar. 31, 2015
Net Loss Per Share Tables  
Schedule of potentially dilutive securities

The table below presents the potentially dilutive securities that would have been included in our calculation of diluted net loss per share allocable to common stockholders if they were not antidilutive for the periods presented.

 

    Three months ended
    March 31, 2015   March 31, 2014
Stock options     17,586,109       16,511,006  
Warrants     13,002,431       14,293,499  
Restricted stock units           50,000  
      30,588,540       30,854,505