Note 15 - Segments (Tables)

12 Months Ended

Dec. 31, 2022

Year Ended December 31, 2022	Diagnostics			Therapeutics			Corporate			Total
Sales revenue:
United States	$	—		$	—		$	—		$	—
International		14,645			—			—			14,645
Grant and other revenue		51,007			—			—			51,007
Total revenue		65,652			—			—			65,652
Cost of revenue		1,941			—			—			1,941
Adjustments for expired and expiring inventory		183,006			—			—			183,006
Research and development expenses		5,501,134			468,640			—			5,969,774
Selling, general and administrative expenses, excluding depreciation and amortization ⁽¹⁾		—			4,530			7,861,477			7,866,007
Depreciation and amortization ⁽²⁾		29,387			—			66,432			95,819
Loss from operations ⁽³⁾		(5,649,816	)		(473,170	)		(7,927,909	)		(14,050,895	)
Other expense, net ⁽⁴⁾		—			—			(1,126,261	)		(1,126,261	)
Net loss		(5,649,816	)		(473,170	)		(9,054,170	)		(15,177,156	)
Total assets, net of depreciation and amortization:
United States	$	610		$	—		$	3,817,195		$	3,817,805
International		539,188			—			14,613			553,801
Capital expenditures		54,650			—			8,436			63,086

Year Ended December 31, 2021	Diagnostics			Therapeutics			Corporate			Total
Royalty revenue	$	—		$	—		$	—		$	—
License revenue		45,615			—			—			45,615
Grant and other revenue		485,898			—			—			485,898
Total revenue		531,513			—			—			531,513
Research and development expenses, excluding depreciation and amortization		4,488,177			653,733			—			5,141,910
Selling, general and administrative expenses, excluding depreciation and amortization ⁽¹⁾		—			4,438			7,368,623			7,373,061
Depreciation and amortization ⁽²⁾		24,162			—			52,792			76,954
Loss from operations ⁽³⁾		(3,980,826	)		(658,171	)		(7,421,415	)		(12,060,412	)
Other income ⁽⁴⁾		—			—			345,524			345,524
Provision for income taxes		(5,452	)		(901	)		(9,690	)		(16,043	)
Net loss		(3,986,278	)		(659,072	)		(7,085,581	)		(11,730,931	)
Total assets, net of depreciation and amortization:
United States	$	107,931		$	—		$	6,326,031		$	6,433,962
International		210,281			—			590			210,871
Capital expenditures		—			—			25,218			25,218