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Note 2 - Summary of Significant Accounting Policies - Summary of Useful Lives of Assets (Details)	12 Months Ended
	Dec. 31, 2022
Minimum [Member] \| Office Equipment [Member]
Property, plant and equipment, useful life (Year)	3 years
Minimum [Member] \| Laboratory Equipment [Member]
Property, plant and equipment, useful life (Year)	5 years
Minimum [Member] \| Computer Software, Intangible Asset [Member]
Property, plant and equipment, useful life (Year)	3 years
Maximum [Member] \| Office Equipment [Member]
Property, plant and equipment, useful life (Year)	7 years
Maximum [Member] \| Laboratory Equipment [Member]
Property, plant and equipment, useful life (Year)	7 years
Maximum [Member] \| Computer Software, Intangible Asset [Member]
Property, plant and equipment, useful life (Year)	5 years