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Condensed Consolidated Statements of Operations (Unaudited) - USD ($)
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Grant revenues $ 81,526 $ 110,417
Operating expenses:    
Research and development 1,330,544 602,783
General and administrative 1,179,024 1,071,710
Total operating expenses 2,509,568 1,674,493
Loss from operations (2,428,042) (1,564,076)
Other income (expense):    
Interest income 527 2,053
Interest expense 0 (755)
Total other income (expense) 527 1,298
Net loss $ (2,427,515) $ (1,562,778)
Basic and diluted:    
Net loss per common share (in dollars per share) $ (0.34) $ (0.29)
Weighted average shares outstanding (in shares) 7,109,473 5,332,058