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Property and Equipment | 3 Months Ended
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Mar. 31, 2021
Property, Plant and Equipment [Abstract] |
Property and Equipment | Property and Equipment Property and equipment consists of the following (in thousands):
| March 31, |  | December 31,
| 2021 |  | 2020
Laboratory equipment | $ | 4,429 |  |  | $ | 4,427 |
Computer equipment and software | 694 |  |  | 532 |
Leasehold improvements | 38 |  |  | 38 |
Furniture and fixtures | 327 |  |  | 327 |
Office equipment | 163 |  |  | 163 |
Construction in process | 30 |  |  | 163 |
Total property and equipment | 5,681 |  |  | 5,650 |
Less accumulated depreciation | (4,380) |  |  | (4,255) |
Property and equipment, net | $ | 1,301 |  |  | $ | 1,395 |
Depreciation expense was $0.1 million and $0.2 million for the three months ended March 31, 2021 and 2020, respectively.

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99893-112916 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=120429125&loc=SL120174063-112916 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99779-112916 + Details
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