Note 9 - Grant Revenue (Details Textual) - USD ($)	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023	Dec. 31, 2022
Revenue from Contract with Customer, Including Assessed Tax	$ 300,677	$ 0	$ 300,677	$ 0	$ 0	$ 81,526
NIH Grants [Member]
Revenue from Contract with Customer, Including Assessed Tax						$ 81,526

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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+ Details