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Note 6 - Property and Equipment - Summary of Property and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Property and equipment, at cost	$ 754	$ 741
Less: accumulated depreciation	(635)	(622)
Total property and equipment, net	119	119
Office and Laboratory Equipment [Member]
Property and equipment, at cost	20	20
Furniture and Fixtures [Member]
Property and equipment, at cost	157	157
Computer Equipment and Software [Member]
Property and equipment, at cost	425	412
Leasehold Improvements [Member]
Property and equipment, at cost	$ 152	$ 152

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

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