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Note 6 - Prepaid Expenses - Schedule of Prepaid Expenses (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Prepaid research and development $ 4,743 $ 1,853
Prepaid insurance 155 461
Professional services 146 124
Other 63 50
Total prepaid expenses $ 5,107 $ 2,488