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Condensed Consolidated Statements of Operations (Unaudited) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Grant revenue $ 166,280 $ 71,474 $ 213,880 $ 174,898
Operating expenses:        
Research and development 397,576 384,653 835,580 788,282
General and administrative 344,818 364,889 1,251,323 766,330
Total operating expenses 742,394 749,542 2,086,903 1,554,612
Loss from operations (576,114) (678,068) (1,873,023) (1,379,714)
Other income:        
Interest income 279 1,865 909 3,057
Net loss $ (575,835) $ (676,203) $ (1,872,114) $ (1,376,657)
Basic and diluted:        
Loss per common share (in dollars per share) $ (0.02) $ (0.02) $ (0.05) $ (0.04)
Weighted averages shares outstanding (in shares) 37,425,291 31,950,813 36,012,458 31,950,813