Quarterly report [Sections 13 or 15(d)]

Note 8 - Commitments and Contingencies (Details Textual)

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Note 8 - Commitments and Contingencies (Details Textual) - USD ($)
10 Months Ended
Apr. 01, 2025
Jan. 16, 2025
Oct. 23, 2024
Nov. 01, 2025
Jun. 30, 2026
Jun. 11, 2026
Sep. 30, 2025
Jan. 31, 2025
Dec. 31, 2024
Executive Headquarters in Illinois [Member]                  
Lessee, Operating Lease, Term of Contract (Month) 36 months     36 months          
Operating Leases, Monthly Rent Expense $ 3,580     $ 5,002          
Wet Laboratory Space and Equipment Lease in North Chicago, Illinois [Member]                  
Lessee, Operating Lease, Term of Contract (Month)   1 year              
Operating Leases, Monthly Rent Expense   $ 875              
Suite 100 at 1000 Skokie Blvd in the Village of Wilmette, Illinois [Member]                  
Lessee, Operating Lease, Term of Contract (Month)           36 months      
Maximum [Member] | XOMA Ltd. [Member]                  
Indefinite-Lived License Agreements         $ 14,925,000        
License Agreement [Member]                  
Stock Issued During Period, Shares, New Issues (in shares)     387,329            
Ownership Interest, License Agreement     9.90%            
Total Cash Payment for License Agreement     $ 4,000,000       $ 4,000,000    
Initial Cash Payment for License Agreement     1,000,000           $ 1,000,000
Additional Cash Payment for License Agreement     $ 3,000,000         $ 3,000,000  
Equity Agreement [Member]                  
Percent of Outstanding Shares     9.90%            
Equity Capital Raised, Amount     $ 25,000,000            
Equity Capital Raised, Number of Shares (in shares)     705,015            
Stock Issued During Period, Shares, Antidilution Provisions (in shares)     157,188            
Milestone Payments         $ 0        
Equity Agreement [Member] | Maximum [Member]                  
Milestone Payments     $ 94,000,000            
Royalty Payments, Percentage of Net Sales     20.00%            
Royalty Payments, Percentage of Sublicensing Income         45.00%        
Equity Agreement [Member] | Minimum [Member]                  
Royalty Payments, Percentage of Net Sales     10.00%            
Royalty Payments, Percentage of Sublicensing Income         35.00%