Note 5 - Property and Equipment, Net - Schedule of Property, Plant and Equipment (Details) - USD ($)	Jun. 30, 2025	Dec. 31, 2024
Property, Plant, and Equipment Gross	$ 2,029,427	$ 2,169,541
Less: Accumulated depreciation	(1,744,773)	(1,821,953)
Total Property and equipment, net	284,654	347,588
Office Equipment [Member]
Property, Plant, and Equipment Gross	170,350	170,350
Leasehold Improvements [Member]
Property, Plant, and Equipment Gross	166,847	306,961
Laboratory Equipment [Member]
Property, Plant, and Equipment Gross	$ 1,692,230	$ 1,692,230