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Note 7 - Stock-Based Compensation Expense - Schedule of Stock-Based Compensation Expense (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024	Dec. 31, 2023
Total stock-based compensation expense					$ 528,644	$ 1,074,957
Share-Based Payment Arrangement, Option [Member]
Total stock-based compensation expense	$ 292,740	$ 101,640	$ 585,484	$ 205,209	474,477	855,124
Share-Based Payment Arrangement, Option [Member] | Research and Development Expense [Member]
Total stock-based compensation expense					222,202	291,094
Share-Based Payment Arrangement, Option [Member] | General and Administrative Expense [Member]
Total stock-based compensation expense					252,275	564,030
Restricted Stock [Member] | General and Administrative Expense [Member]
Total stock-based compensation expense					$ 54,167	$ 219,833

X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section S45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479983/718-10-S45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479830/718-10-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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