Quarterly report pursuant to Section 13 or 15(d)

Accounts Payable and Accrued Expenses

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Accounts Payable and Accrued Expenses
 3 Months Ended
Mar. 31, 2012
Accounts Payable and Accrued Expenses  
Accounts Payable and Accrued Expenses
7.
Accounts Payable and Accrued Expenses
 
   
March 31,
    
December 31,
  
   
2012
    
2011
  
             
Trade payables
   $ 414,927     $ 555,613  
Accrued expenses
     49,218       50,401  
Accrued research and development contract costs
     420,851       449,775  
Payroll liabilities
     135,015       129,616  
                 
    $ 1,020,011     $ 1,185,405