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Significant accounting policies (Tables)
6 Months Ended
Jun. 30, 2013
Significant accounting policies  
Schedule of estimated useful lives of the assets

 

Laboratory equipment

 

5 years

 

Furniture

 

5 years

 

Computer equipment

 

3 years

 

Leasehold improvements

 

Shorter of asset life or lease term

 

Schedule of amounts excluded from the calculation of diluted net loss per share, prior to the use of the treasury stock method, due to their anti-dilutive effect

The amounts in the table below were excluded from the calculation of diluted net loss per share, prior to the use of the treasury stock method, due to their anti-dilutive effect (in thousands):

 

 

 

At June 30,

 

 

 

2013

 

2012

 

Series A preferred stock

 

 

3,065

 

Series B preferred stock

 

 

6,771

 

Outstanding stock options and restricted stock units

 

2,170

 

687

 

Founders’ stock

 

1,316

 

1,974