Note 5 - Prepaid Expenses (Tables)

3 Months Ended

Mar. 31, 2021

Notes Tables

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

	As of March 31,		As of December 31,
	2021		2020
Prepaid research and development	$	1,742,363	$	1,215,834
Prepaid insurance		554,405		417,854
Professional services		172,955		128,229
Financial exchange fees		43,500		-
Retainer and security deposits		14,218		14,218
Prepaid rent		18,720		4,488
Other		4,291		33,279
Total prepaid expenses	$	2,550,452	$	1,813,902