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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Income Statement [Abstract]    
Revenue from contract with customer, product and service Grant Grant
Grant revenue $ 0 $ 0
Operating expenses:    
Research and development 3,725,588 4,439,475
General and administrative 1,695,075 1,677,754
Total operating expenses 5,420,663 6,117,229
Loss before other income (expense) (5,420,663) (6,117,229)
Interest income, net and other 79,890 8,004
Loss from continuing operations (5,340,773) (6,109,225)
Net loss $ (5,340,773) $ (6,109,225)
Loss per common share, basic ( in dollar per share) $ (2.23) $ (3.30)
Loss per common share, diluted ( in dollar per share) $ (2.23) $ (3.30)
Weighted average number of shares outstanding, basic (in shares) 2,391,964 1,850,208
Weighted average number of shares outstanding, diluted (in shares) 2,391,964 1,850,208