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PROPERTY AND EQUIPMENT | 12 Months Ended
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Dec. 31, 2021
PROPERTY AND EQUIPMENT |
PROPERTY AND EQUIPMENT | NOTE 3 - PROPERTY AND EQUIPMENT a. Composition of property and equipment grouped by major classifications is as follows:
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31,
(U.S. dollars in thousands) |  | 2020 |  | 2021
Laboratory equipment | ​ | $ | 17,422 | ​ | $ | 18,237
Furniture and computer equipment | ​ |  | 2,687 | ​ |  | 2,718
Leasehold improvements | ​ |  | 16,659 | ​ |  | 16,759
​ | ​ | $ | 36,768 | ​ | $ | 37,714
Less – accumulated depreciation and amortization | ​ |  | (31,923) | ​ |  | (32,752)
​ | ​ | $ | 4,845 | ​ | $ | 4,962
​ b. Depreciation in respect of property and equipment totaled approximately $1.6 million, $1.3 million and $1.1 million for the years ended December 31, 2019, 2020 and 2021, 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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