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Note 2 - Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2024
Notes Tables  
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
  

Year Ended December 31,

 
  

2024

  

2023

 

Common stock warrants

  1,498,483    

Common stock options

  10,979,332   9,466,036 

Total

  12,477,815   9,466,036