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Stock-Based Compensation
3 Months Ended
Mar. 31, 2013
Stock-Based Compensation [Abstract]  
Stock-Based Compensation

Note 4. Stock-Based Compensation

Our non-cash stock-based compensation expense is as follows (in thousands):

 

                 
    Three months ended
March 31,
 
    2013     2012  

Research and development

  $ 303     $ 465  

General and administrative

    376       442  
   

 

 

   

 

 

 
    $ 679     $ 907