Property and equipment, net consisted of the following (in thousands):


	June 30, 2025			December 31, 2024
Laboratory equipment	$	24,557		$	24,468
Computer equipment		4,058			3,924
Furniture and office equipment		4,524			4,523
Leasehold improvements		30,953			30,954
Construction in progress		861			861
		64,953			64,730
Less: Accumulated depreciation and amortization		(55,331	)		(53,196	)
	$	9,622		$	11,534

Depreciation and amortization expense was $1,059, $2,135, $1,420 and $2,979 for the three and six months ended June 30, 2025 and 2024 respectively. The expense for the three and six months ended June 30, 2024 includes amounts related to both continuing and discontinued operations. The Company did not dispose of any assets during the six months ended June 30, 2025. During the six months ended June 30, 2024, the Company disposed of certain assets with a cost basis of $594. In addition, during the six months ended June 30, 2024, the Company recorded an impairment loss of $1,536 related to leasehold improvements at one of the Company’s locations for which impairment indicators were determined to exist as of June 30, 2024. See Note 6, Leases, for further details.