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Condensed Consolidated Statements of Operations (Unaudited) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Grant revenue $ 0 $ 79,708 $ 81,526 $ 190,125
Operating expenses:        
Research and development 1,307,177 832,835 2,637,721 1,435,618
General and administrative 935,311 733,499 2,114,335 1,805,209
Total operating expenses 2,242,488 1,566,334 4,752,056 3,240,827
Loss from operations (2,242,488) (1,486,626) (4,670,530) (3,050,702)
Other income (expense):        
Interest income 789 1,068 1,316 3,121
Interest expense 0 (531) 0 (1,286)
Gain on debt extinguishment 0 172,056 0 172,056
Total other income (expense) 789 172,593 1,316 173,891
Net loss $ (2,241,699) $ (1,314,033) $ (4,669,214) $ (2,876,811)
Basic and diluted:        
Net loss per common share (in dollars per share) $ (0.18) $ (0.21) $ (0.47) $ (0.49)
Weighted average shares outstanding (in shares) 12,721,696 6,322,799 9,931,088 5,830,165