Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Operating expenses:
Research and development	$ 1,972,673	$ 2,173,183	$ 4,889,051	$ 3,707,650
General and administrative	1,836,773	1,458,257	3,580,283	2,852,065
Depreciation	23,755	27,021	48,202	54,041
Loss from operations	3,833,201	3,658,461	8,517,536	6,613,756
Other income:
Interest income	(55,228)	(25,913)	(95,644)	(60,013)
Loss from operations before income tax benefit	(3,777,973)	(3,632,548)	(8,421,892)	(6,553,743)
Income tax benefit	0	507,325	0	869,705
Net loss	(3,777,973)	(3,125,223)	(8,421,892)	(5,684,038)
Deemed dividend arising from warrant exchange	0	(1,950,378)	0	(1,950,378)
Net loss attributable to common stockholders	$ (3,777,973)	$ (5,075,601)	$ (8,421,892)	$ (7,634,416)
Per share information:
Net loss per share of common stock, basic and diluted (in dollars per share)	$ (0.04)	$ (0.10)	$ (0.09)	$ (0.18)
Weighted average shares outstanding, basic and diluted (in dollars per share)	$ 101,903,979	$ 51,978,286	$ 92,713,142	$ 43,242,891