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CIRM Grants (Details) - LAD-1 CIRM Grant [Member]
$ in Millions
3 Months Ended
Mar. 31, 2023
USD ($)
Milestone
Apr. 30, 2019
USD ($)
CIRM Grants [Abstract]    
Grant award for clinical development support   $ 7.5
Milestone payments received $ 5.9  
Number of milestones achieved | Milestone 0