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Consolidated Balance Sheets (USD $)
Dec. 31, 2011
Dec. 31, 2010
Current assets:    
Cash and cash equivalents $ 1,167,980 $ 1,079,087
Grant funds receivable 183,515 474,275
Prepaid expenses and other current assets 66,508 48,830
Total current assets 1,418,003 1,602,192
Property and equipment, net of accumulated depreciation and amortization 176,206 248,441
Other assets:    
Licenses, net of accumulated amortization of $208,933 and $184,047 at December 31, 2011 and 2010 respectively 39,923 64,809
Deferred offering costs   430,402
Deposits and other assets 11,010 11,990
Total other assets 50,933 507,201
Total assets 1,645,142 2,357,834
Current liabilities:    
Accounts payable 138,339 96,892
Accrued expenses 125,869 241,736
Amounts payable to Emory University (a related party) 677,327 182,980
Total current liabilities 941,535 521,608
Commitments (Note 4)      
Stockholders’ equity:    
Common stock, $.001 par value, 40,000,000 shares authorized; 16,442,611 and 15,654,846 shares issued and outstanding at December 31, 2011 and 2010, respectively 16,443 15,655
Additional paid-in capital 23,319,166 22,105,747
Deficit accumulated during the development stage (22,632,002) (20,285,176)
Total stockholders’ equity 703,607 1,836,226
Total liabilities and stockholders’ equity $ 1,645,142 $ 2,357,834