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Note 1 - Organization and Summary of Significant Accounting Policies - Accrued Expenses (Details) - USD ($)
Sep. 30, 2023
Dec. 31, 2022
Employee wages and benefits $ 429,820 $ 580,264
Research and development expenses 177,875 343,457
Other 12,547 31,360
Accrued Liabilities, Current $ 620,242 $ 955,081