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Warrants (Tables)
6 Months Ended
Jun. 30, 2012
Warrants Tables  
Warrants

At June 30, 2012, the following warrants were outstanding and exercisable:

 

Warrants granted in connection with :  

Weighted Average

Exercise Prices

   

Number Outstanding

And Exercisable

At June 30, 2012

 

Weighted Average

Remaining Contractual Life

2008 Private Placement Equity Offering   $ 3.00       1,718,350   9.6 months
2010 Private Placement Equity Offering   $ 0.21       8,339,278   10.7 months
    $ 0.69       10,057,628   10.4 months