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Note 2 - Property and Equipment | 12 Months Ended
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Dec. 31, 2020
Notes to Financial Statements |
Property, Plant and Equipment Disclosure [Text Block] | Note 2 — Property and Equipment Property and equipment consisted of the following at December 31:
|  | 20 20 |  |  | 201 9 |
Furniture and fixtures |  | $ | 722 |  |  | $ | 602 |
Office equipment |  |  | 211 |  |  |  | 184 |
Software |  |  | 1,159 |  |  |  | 1,159 |
Laboratory equipment |  |  | 3,774 |  |  |  | 3,462 |
Leasehold improvements |  |  | 8,583 |  |  |  | 8,528 |
|  |  | 14,449 |  |  |  | 13,935 |
Less accumulated depreciation and amortization |  |  | (7,336 | ) |  |  | (6,588 | )
Property and equipment, net |  | $ | 7,113 |  |  | $ | 7,347 |
Depreciation and amortization expense for the years ended December 31, 2020, 2019, and 2018 was $748, $724, and $770, respectively.

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