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Condensed Consolidated Balance Sheets (USD $)
Sep. 30, 2011
Dec. 31, 2010
Current assets:  
Cash and cash equivalents$ 566,657$ 1,079,087
Grant funds receivable424,914474,275
Prepaid expenses and other12,42548,830
Total current assets1,003,9961,602,192
Property and equipment, net of accumulated depreciation and amortization of $334,566 and $271,953 at September 30, 2011 and December 31, 2010, respectively185,828248,441
Licenses, net of accumulated amortization of $202,711 and $184,047 at September 30, 2011 and December 31, 2010, respectively46,14564,809
Deferred offering costs564,596430,402
Deposits and other11,99011,990
Total other assets622,731507,201
Total assets1,812,5552,357,834
Current liabilities:  
Accounts payable and accrued expenses164,942338,628
Amounts payable to Emory University (a related party)485,117182,980
Total current liabilities650,059521,608
Commitments (Note 4)  
Common stock, $.001 par value, 40,000,000 shares authorized; 15,784,091 and 15,654,846 shares issued and outstanding at September 30, 2011 and December 31, 2010, respectively15,78415,655
Additional paid-in capital22,625,36622,105,747
Deficit accumulated during the development stage(21,478,654)(20,285,176)
Total stockholders’ equity1,162,4961,836,226
Total liabilities and stockholders’ equity$ 1,812,555$ 2,357,834