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Note 6 - Accrued Expenses and Other Current Liabilities (Tables)

3 Months Ended

Mar. 31, 2023

Notes Tables

Schedule of Accrued Liabilities and Other Current Liabilities [Table Text Block]

		March 31,				December 31,
		2023				2022
Accrued expenses		$	38			$	157
Accrued salaries and employee benefits			1,100				899
Accrued clinical trial costs			693				548
Grant liability			518				534
Customer deposits			90				90
Payable to related party			33				18
Total		$	2,472			$	2,246

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