Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Mar. 31, 2024	Dec. 31, 2023
Assets [Abstract]
Cash and cash equivalents	$ 768,859	$ 6,452,589
Prepaid expenses	2,093,519	1,433,153
Total current assets	2,862,378	7,885,742
Property and equipment, net	190,113	209,689
Other assets	305,691	1,187,788
Total assets	3,358,182	9,283,219
Current liabilities:
Accounts payable	1,883,844	2,802,950
Accrued expenses	1,420,063	716,931
Total current liabilities	3,303,907	3,519,881
Equity [Abstract]
Common stock, $.001 par value: Authorized shares – 150,000,000 and 600,000,000 at March 31, 2024 and December 31, 2023, respectively; Issued and outstanding shares – 2,308,309 and 1,977,152 at March 31, 2024 and December 31, 2023, respectively	2,308	1,977
Additional paid-in capital	110,265,884	110,125,146
Accumulated deficit	(110,213,917)	(104,363,785)
Total stockholders’ equity	54,275	5,763,338
Total liabilities and stockholders’ equity	$ 3,358,182	$ 9,283,219

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).