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Components of Deferred Income Taxes (Detail) - USD ($) | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Deferred tax assets: |  |
Net operating loss carryforwards | $ 71,161,394 | $ 69,980,468
Research tax credits | 9,173,787 | 10,034,233
Stock options | 938,846 | 1,497,450
Other, net | 269,439 | 355,204
Right-of-use liability | 106,148 | 166,832
Research and experimentation capitalization | 3,985,733 | 2,626,585
Total deferred tax assets | 85,635,347 | 84,660,772
Deferred tax liabilities |  |
Right-of-use asset | (94,000) | (152,511)
In-process research and development | (1,343,213) | (1,343,213)
Total deferred tax liabilities | (1,437,213) | (1,495,724)
Net deferred tax assets | 84,198,134 | 83,165,048
Valuation allowance | (84,399,926) | (83,366,840)
Net deferred tax liability | $ (201,792) | $ (201,792)

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