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Exercise price per share or per unit of warrants or rights outstanding.

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Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

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The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity.

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Number of additional shares authorized for issuance under share-based payment arrangement.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Number of options outstanding, including both vested and non-vested options.

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Per share or per unit amount of equity securities issued.

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Number of new stock issued during the period.

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Note 6 - Stockholders' Equity (Details Textual) $ / shares in Units, $ in Millions	Jun. 22, 2026 shares	Mar. 13, 2026 USD ($) $ / shares shares	Jun. 30, 2026 shares	Dec. 31, 2025 $ / shares shares
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number			4,215,924	2,610,477
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant			4,063,187
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares				$ 0.72
Pre-funded Warrants [Member]
Class of Warrant or Right, Issued During Period, Price Per Warrant \| $ / shares		$ 0.585
Class of Warrant or Right, Number of Securities Called by Warrants or Rights		6,399,316
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares		$ 0.001
April 2025 Private Placement, Third Closing [Member]
Private Placement, Covenant to Trigger Sale, Patients Enrolled		35
Stock Issued During Period, Shares, New Issues		639,931
Shares Issued, Price Per Share \| $ / shares		$ 0.586
Proceeds from Issuance or Sale of Equity \| $		$ 4.1
The 2020 Equity Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized	4,000,000
The 2020 Equity Incentive Plan [Member] \| Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized	8,561,395
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number	744,608
Employee Stock Purchase Plan (ESPP) [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized	100,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant	545,000