Note 3 - Balance Sheet Components (Tables)

9 Months Ended

Sep. 30, 2022

Notes Tables

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

	September 30, 2022		December 31, 2021
Prepaid clinical trial costs (current portion)	$	1,231,337	$	-
Prepaid insurance premiums		143,450		123,248
Prepaid rent		13,045		13,045
Other prepaid expenses		72,375		19,947
Total prepaid expenses	$	1,460,207	$	156,240

Property, Plant and Equipment [Table Text Block]

	September 30, 2022			December 31, 2021
Equipment and furnishings	$	725,812		$	591,554
Leasehold improvements		115,605			115,605
Total property and equipment		841,417			707,159
Accumulated depreciation and amortization		(592,434	)		(550,221	)
Total property and equipment, net	$	248,983		$	156,938

Schedule of Other Assets [Table Text Block]

	September 30, 2022		December 31, 2021
Prepaid clinical trial costs (noncurrent portion)	$	2,083,276	$	-
Prepaid technology license fees		90,000		-
Deposits		11,010		11,010
Total other assets	$	2,184,286	$	11,010

Schedule of Accrued Liabilities [Table Text Block]

	September 30, 2022		December 31, 2021
Accrued technology license fees – current portion	$	3,000,000	$	3,000,000
Accrued compensation		-		269,000
Other accrued expenses		709,984		108,826
Total accrued expenses	$	3,709,984	$	3,377,826