Annual report pursuant to Section 13 and 15(d)

Accounts Payable and Accrued Expenses

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Accounts Payable and Accrued Expenses
 12 Months Ended
Dec. 31, 2011
Accounts Payable and Accrued Expenses  
Accounts Payable and Accrued Expenses
8.
Accounts Payable and Accrued Expenses

   
December 31,
    
December 31,
  
   
2011
    
2010
  
             
Trade payables
   $ 555,613     $ 489,527  
Accrued expenses
     50,401       18,466  
Accrued research and development contract costs
     449,775       1,239,233  
Payroll liabilities
     129,616       73,674  
                 
    $ 1,185,405     $ 1,820,900