Note 3 - Balance Sheet Components (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block]

	2023		2022
Prepaid clinical trial costs (current portion)	$	1,282,746	$	1,171,077
Prepaid insurance premiums		110,695		107,876
Prepaid rent		13,045		13,045
Other prepaid expenses		26,667		34,000
Total prepaid expenses	$	1,433,153	$	1,325,998

Property, Plant and Equipment [Table Text Block]

	2023			2022
Equipment and furnishings	$	774,758		$	725,812
Leasehold improvements		115,605			115,605
Total property and equipment		890,363			841,417
Accumulated depreciation and amortization		(680,674	)		(606,505	)
Total property and equipment, net	$	209,689		$	234,912

Schedule of Other Assets [Table Text Block]

	2023		2022
Prepaid clinical trial costs (noncurrent portion)	$	1,106,778	$	2,083,276
Prepaid technology license fees		70,000		80,000
Deposits		11,010		11,010
Total other assets	$	1,187,788	$	2,174,286

Schedule of Accrued Liabilities [Table Text Block]

	2023		2022
Accrued license fees	$	-	$	2,000,000
Payroll-related liabilities		114,337		550,810
Other accrued expenses		602,594		449,402
Total accrued expenses	$	716,931	$	3,000,212