CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Operating activities
Net loss	$ (4,926,265)	$ (3,868,074)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation, amortization and impairment	9,591	8,466
Equity-based compensation expense	282,835	71,314
Shares issued for services	0	25,000
Change in fair value of warrant liability	3,868	(220,435)
Changes in operating assets and liabilities:
Grants receivable	(938,923)	(1,834,439)
Prepaid expenses and other current assets	417,662	617,709
Accounts payable	(577,877)	(741,018)
Accrued expenses and other current liabilities	(168,461)	298,369
Deferred revenue	0	(541,701)
Net cash used in operating activities	(5,897,570)	(6,184,809)
Financing activities
Proceeds from issuance of equity securities, net	26,850,022	9,592,325
Proceeds from warrants exercised for cash	1,485,351	578,714
Payments on note payable	(477,028)	(502,332)
Net cash provided by financing activities	27,858,345	9,668,707
Net increase in cash, cash equivalents and restricted cash	21,960,775	3,483,898
Cash, cash equivalents and restricted cash at beginning of period	11,118,614	3,738,900
Cash, cash equivalents and restricted cash at end of period	33,079,389	7,222,798
Supplemental disclosure of cash flow information:
Cash paid for interest	1,468	4,275
Non-cash investing and financing activities:
Accrued issuance costs for public offering	$ 0	$ 125,159