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v3.23.1

Property and equipment | 12 Months Ended
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Dec. 31, 2022
Property and equipment |
Property and equipment | 4. Property and equipment Property and equipment consist of the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31,
​ |  | 2022 |  | 2021
Lab equipment | ​ | $ | 40,133 | ​ | $ | 90,770
Furniture & Fixtures | ​ |  | — | ​ |  | 31,152
Computer equipment | ​ |  | 5,258 | ​ |  | 18,955
Property and equipment, at cost | ​ |  | 45,391 | ​ |  | 140,877
Less accumulated depreciation and amortization | ​ |  | (43,070) | ​ |  | (117,007)
Property and equipment—net | ​ | $ | 2,321 | ​ | $ | 23,870
​ Depreciation expense for years ended December 31, 2022, 2021 and 2020 was $4,403, $12,829, $28,834, 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 https://asc.fasb.org/extlink&oid=126982197&loc=d3e99893-112916 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI https://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 https://asc.fasb.org/extlink&oid=126982197&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 https://asc.fasb.org/extlink&oid=126982197&loc=d3e99779-112916 + Details
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