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Condensed Consolidated Balance Sheets (USD $)
Jun. 30, 2012
Dec. 31, 2011
Current assets:    
Cash and cash equivalents $ 1,817,014 $ 1,167,980
Grant funds receivable 251,791 183,515
Prepaid expenses and other current assets 41,166 66,508
Total current assets 2,109,971 1,418,003
Property and equipment, net of accumulated depreciation and amortization of $392,944 and $356,084 at June 30, 2012 and December 31, 2011, respectively 139,346 176,206
Other assets:    
Licenses, net of accumulated amortization of $218,894 and $208,933 at June 30, 2012 and December 31, 2011, respectively 29,961 39,923
Deposits and other assets 11,010 11,010
Total other assets 40,971 50,933
Total assets 2,290,288 1,645,142
Current liabilities:    
Accounts payable 29,003 138,339
Accrued expenses 75,318 125,869
Amounts payable to Emory University (a related party) 275,668 677,327
Total current liabilities 379,989 941,535
Commitments (Note 4)      
Stockholders’ equity:    
Preferred stock, $0.01 par value, 10,000,000 shares authorized; Series A Convertible Preferred Stock, $1,000 stated value; 1,040 and -0- shares issued and outstanding at June 30, 2012 and December 31, 2011, respectively 412,036  
Common stock, $0.001 par value, 40,000,000 shares authorized; 18,397,277 and 16,442,611 shares issued and outstanding at June 30, 2012 and December 31, 2011, respectively 18,397 16,443
Additional paid-in capital 25,340,144 23,319,166
Deficit accumulated during the development stage (23,860,278) (22,632,002)
Total stockholders’ equity 1,910,299 703,607
Total liabilities and stockholders’ equity $ 2,290,288 $ 1,645,142