Note 1 - Organization and Summary of Significant Accounting Policies - Accounts Payable (Details) - USD ($)	Mar. 31, 2023	Dec. 31, 2022
Research and development expenses	$ 577,967	$ 1,067,958
Legal expenses	144,110	56,514
Other	48,294	151,841
Accounts Payable, Current	$ 770,371	$ 1,276,313

Represents current research and development in process.

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Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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