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Note 3 - Balance Sheet Components (Tables) | 12 Months Ended
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Dec. 31, 2022
Notes Tables |
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block] |
|  | 2022 |  |  | 2021 |
Prepaid clinical trial costs (current portion) |  | $ | 1,171,077 |  |  | $ | - |
Prepaid insurance premiums |  |  | 107,876 |  |  |  | 123,248 |
Prepaid rent |  |  | 13,045 |  |  |  | 13,045 |
Other prepaid expenses |  |  | 34,000 |  |  |  | 19,947 |
Total prepaid expenses |  | $ | 1,325,998 |  |  | $ | 156,240 |
Property, Plant and Equipment [Table Text Block] |
|  | 2022 |  |  | 2021 |
Equipment and furnishings |  | $ | 725,812 |  |  | $ | 591,554 |
Leasehold improvements |  |  | 115,605 |  |  |  | 115,605 |
Total property and equipment |  |  | 841,417 |  |  |  | 707,159 |
Accumulated depreciation and amortization |  |  | (606,505 | ) |  |  | (550,221 | )
Property and equipment, net |  | $ | 234,912 |  |  | $ | 156,938 |
Schedule of Other Assets [Table Text Block] |
|  | 2022 |  |  | 2021 |
Prepaid clinical trial costs (noncurrent portion) |  | $ | 2,083,276 |  |  | $ | - |
Prepaid technology license fees |  |  | 80,000 |  |  |  | - |
Deposits |  |  | 11,010 |  |  |  | 11,010 |
Total other assets |  | $ | 2,174,286 |  |  | $ | 11,010 |
Schedule of Accrued Liabilities [Table Text Block] |
|  | 2022 |  |  | 2021 |
Accrued license fees (current portion) |  | $ | 2,000,000 |  |  | $ | 3,000,000 |
Payroll-related liabilities |  |  | 550,810 |  |  |  | 269,000 |
Other accrued expenses |  |  | 449,402 |  |  |  | 108,826 |
Total accrued expenses |  | $ | 3,000,212 |  |  | $ | 3,377,826 |

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- Definition Tabular disclosure of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer; the aggregate carrying amount of current assets, not separately presented elsewhere in the balance sheet; and other deferred costs. + References No definition available. + Details
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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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- Definition Tabular disclosure of the carrying amounts of other assets. This disclosure includes other current assets and other noncurrent assets. + References No definition available. + Details
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