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Balance Sheet Components | 12 Months Ended
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Dec. 31, 2022
Balance Sheet Related Disclosures [Abstract] |
Balance Sheet Components | 5. Balance Sheet Components Prepaid Expenses and Other Current Assets Prepaid expenses and other current assets are comprised of the following (in thousands):
|  | December 31, |
|  | 2022 |  |  | 2021 |
Prepaid expenses |  | $ | 5,616 |  |  | $ | 4,538 |
Other current assets |  |  | 2,929 |  |  |  | 3,154 |
Total prepaid expenses and other current assets |  | $ | 8,545 |  |  | $ | 7,692 |
Property and Equipment, Net P roperty and equipment, net is comprised of the following (in thousands):
|  | December 31, |
|  | 2022 |  |  | 2021 |
Leasehold improvements |  | $ | 4,402 |  |  | $ | 3,462 |
Furniture and fixtures |  |  | 645 |  |  |  | 544 |
Research equipment |  |  | 12,900 |  |  |  | 9,633 |
Computers and software |  |  | 130 |  |  |  | 130 |
Construction-in-progress |  |  | 49,655 |  |  |  | 2,274 |
Total property and equipment |  |  | 67,732 |  |  |  | 16,043 |
Less accumulated depreciation and amortization |  |  | (5,824 | ) |  |  | (3,187 | )
Total property and equipment, net |  | $ | 61,908 |  |  | $ | 12,856 |
Depreciation and amortization expense were $2.6 million and $1.8 million for the years ended December 31, 2022 and 2021, respectively. Accrued and Other Current Liabilities Accrued and other current liabilities are comprised of the following (in thousands):
|  | December 31, |
|  | 2022 |  |  | 2021 |
Accrued compensation |  | $ | 6,691 |  |  | $ | 5,453 |
Accrued research and development costs |  |  | 3,486 |  |  |  | 2,280 |
Accrued property and equipment |  |  | 5,001 |  |  |  | 96 |
Other accrued and current liabilities |  |  | 858 |  |  |  | 1,518 |
Total accrued and other liabilities |  | $ | 16,036 |  |  | $ | 9,347 |

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- Definition The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -URI https://asc.fasb.org/topic&trid=2122208 + Details
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