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Note 6 - Property and Equipment | 3 Months Ended
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Mar. 31, 2024
Notes to Financial Statements |
Property, Plant and Equipment Disclosure [Text Block] | NOTE 6. PROPERTY AND EQUIPMENT Property and equipment consisted of the following (in thousands):
|  | March 31, |  |  | December 31, |
|  | 2024 |  |  | 2023 |
Office and laboratory equipment |  | $ | 20 |  |  | $ | 20 |
Furniture and fixtures |  |  | 157 |  |  |  | 157 |
Computer equipment and software |  |  | 433 |  |  |  | 431 |
Leasehold improvements |  |  | 152 |  |  |  | 152 |
Total property and equipment, at cost |  |  | 762 |  |  |  | 760 |
Less: accumulated depreciation |  |  | (685 | ) |  |  | (673 | )
Total property and equipment, net |  | $ | 77 |  |  | $ | 87 |
Depreciation expense related to continuing operations was $12 thousand and $13 thousand for the three months ended March 31, 2024 and 2023, respectively. The Company recorded no depreciation expense during the three months ended March 31, 2024 and 2023, and no property and equipment as of March 31, 2024 and December 31, 2023 related to discontinued operations.

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