Selected Balance Sheet Components (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2024

Dec. 31, 2023

Restructuring Cost and Reserve [Line Items]

Schedule of Property and Equipment

Property and equipment at March 31, 2024 and December 31, 2023 net of accumulated depreciation expenses was as follows (in thousands):

	March 31, 2024 (unaudited)			December 31, 2023
Computer equipment	$	31		$	30
Equipment		850			837
Software		96			96
Total property and equipment		977			963
Less accumulated depreciation		(413	)		(390	)
Total property and equipment, net	$	564		$	573

Property and equipment at December 31, 2023 and 2022 consists of:

	December 31, 2023			December 31, 2022
Computer	$	29,581		$	24,061
Equipment		836,771			353,343
Software		96,517			81,676
Total property and equipment		962,869			459,080
Less: accumulated depreciation		(389,548	)		(367,511	)
Property and equipment, net	$	573,321		$	91,569

Schedule of Intangible Assets, Net

At March 31, 2024, intangible assets, primarily consisting of acquired IPR&D with alternative use and patents, and accumulated amortization were as follows (in thousands):

	March 31, 2024 (unaudited)
Intangible assets	$	576
Accumulated amortization		(2	)
Total intangible assets, net	$	574

Schedule of Amortization Assets

Amortization of intangible assets for periods subsequent to March 31, 2024 is as follows (in thousands):

Year Ending December 31,	Amortization Expense
2024		98
2025		131
2026		132
Thereafter		213
Total	$	574

Schedule of Accounts Payable and Accrued Liabilities

At March 31, 2024 and December 31, 2023, accounts payable and accrued liabilities were comprised of the following (in thousands):

	March 31, 2024 (unaudited)		December 31, 2023
Accounts payable	$	2,605	$	580
Accrued compensation		111		13
Accrued vendors and other expenses		1,297		570
Total accounts payable and accrued liabilities	$	4,013	$	1,163

Agex Therapeutics Inc [Member]

Restructuring Cost and Reserve [Line Items]

Schedule of Intangible Assets, Net

At December 31, 2023 and 2022, intangible assets, primarily consisting of acquired IPR&D and patents, and accumulated amortization were as follows (in thousands):

	December 31,
	2023			2022
Intangible assets	$	1,312		$	1,312
Accumulated amortization		(705	)		(574	)
Total intangible assets, net	$	607		$	738

Schedule of Amortization Assets

Amortization of intangible assets for periods subsequent to December 31, 2023 is as follows (in thousands):

Year Ending December 31,	Amortization Expense
2024	$	131
2025		131
2026		132
2027		131
2028		82
Total	$	607

Schedule of Accounts Payable and Accrued Liabilities

At December 31, 2023 and 2022, accounts payable and accrued liabilities were comprised of the following (in thousands):

	December 31,
	2023		2022
Accounts payable	$	1,413	$	568
Accrued vendors and other expenses		529		273
Accrued compensation and severance expenses		234		193
Total accounts payable and accrued liabilities	$	2,176	$	1,034