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Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)
Sep. 30, 2025
Dec. 31, 2024
Current assets:    
Cash and cash equivalents $ 9,437,400 $ 8,999,496
Marketable securities 17,856,688 29,922,523
Prepaid expenses and other current assets 1,685,972 1,905,360
Deferred offering costs 269,331 0
Grant receivable 1,361,387 2,254,231
Total current assets 30,610,778 43,081,610
Total assets 30,610,778 43,081,610
Current liabilities:    
Accounts payable 1,349,219 1,511,440
Accrued expenses and other current liabilities 3,250,095 2,367,842
Total liabilities 4,599,314 3,879,282
Commitments and Contingencies  
Stockholders’ Equity:    
Common stock, $0.001 par value: 1,000,000,000 shares authorized at September 30, 2025 and December 31, 2024: 9,252,719 and 8,702,719 shares issued and outstanding at September 30, 2025 and December 31, 2024, respectively 9,252 8,702
Additional paid-in capital 115,606,949 109,868,913
Accumulated other comprehensive income 5,824 56,197
Accumulated deficit (89,610,561) (70,731,484)
Total stockholders' equity 26,011,464 39,202,328
Total liabilities and stockholders' equity 30,610,778 43,081,610
Series A Preferred Stock [Member]    
Stockholders’ Equity:    
Series A preferred stock $0.001 par value: 30,000,000 authorized at September 30, 2025 and December 31, 2024, 0 shares issued and outstanding at September 30, 2025 and December 31, 2024 $ 0 $ 0