Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Sep. 30, 2021	Dec. 31, 2020
ASSETS
Cash and cash equivalents	$ 18,107,019	$ 9,883,796
Grant funds and other receivables	0	182,663
Prepaid expenses and other current assets	52,818	168,689
Total current assets	18,159,837	10,235,148
Property and equipment, net	168,653	147,741
Deposits	11,010	11,010
Total assets	18,339,500	10,393,899
Current liabilities:
Accounts payable	289,438	267,702
Accrued expenses	46,212	359,281
Current portion of notes payable	0	183,326
Total current liabilities	335,650	810,309
Note payable, net of current portion	0	14,738
Total liabilities	335,650	825,047
Commitments (Note 8)
Stockholders’ equity:
Preferred Stock, $.01 par value: Authorized shares – 10,000,000 Series B convertible preferred stock, $1,000 stated value; -0- and 100 shares issued and outstanding at September 30, 2021 and December 31, 2020, respectively	0	76,095
Common stock, $.001 par value: Authorized shares – 600,000,000 Issued and outstanding shares – 6,381,541 and 3,834,095 at September 30, 2021 and December 31, 2020, respectively	6,382	3,834
Additional paid-in capital	68,630,363	55,294,504
Accumulated deficit	(50,632,895)	(45,805,581)
Total stockholders’ equity	18,003,850	9,568,852
Total liabilities and stockholders’ equity	$ 18,339,500	$ 10,393,899