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Condensed Consolidated Balance Sheet Components (Details) - Schedule of other non-current liabilities - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Schedule of Other Non Current Liabilities [Abstract]    
CIRM grant liability $ 2,264 $ 2,264
Restricted stock liability 3 9
Other non-current liabilities 64 80
Total $ 2,331 $ 2,353