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Accrued Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2020
Accrued Liabilities [Abstract] |
Schedule of Accrued Liabilities | Accrued liabilities were as follow (in thousands):
| December 31,
| 2020 |  | 2019
Salaries, employee benefits and related taxes | $ | 1,716 |  |  | $ | 1,834 |
Operating lease liabilities - current | 370 |  |  | 354 |
CIRM upfront funding - current | — |  |  | 1,600 |
Other | 400 |  |  | 698 |
| $ | 2,486 |  |  | $ | 4,486 |

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