Property, plant and equipment, net

9 Months Ended

Sep. 30, 2021

Property, Plant and Equipment [Abstract]

Property, plant and equipment, net

5. Property, plant and equipment, net

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

	September 30, 2021			December 31, 2020
Laboratory equipment		338			338
Less: accumulated depreciation		(329	)		(317	)
		9			21

Depreciation expense for the three months ended September 30, 2021 and 2020 was $22 and $38 respectively; and for the nine months ended September 30, 2021 and 2020 was $90 and $110 and respectively.