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Note 1 - Organization and Summary of Significant Accounting Policies - Accounts Payable (Details) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Research and development expenses	$ 2,273,607	$ 904,572
Legal expenses	70,695	24,496
Other	90,632	84,031
Accounts Payable, Current, Total	$ 2,434,934	$ 1,013,099

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