Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Sep. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 5,921,614	$ 6,515,028
Short-term investment securities	4,000,832	748,290
Interest receivable	40,835	10,083
Accounts receivable	352,934	466,159
Prepaid expenses and other current assets	374,209	327,775
Total current assets	10,690,424	8,067,335
Non-current assets:
Operating lease right-of-use asset, net	104,914	141,439
Other assets	10,328	10,462
Total assets	10,805,666	8,219,236
Current liabilities:
Accounts payable	561,797	656,445
Accrued expenses	839,420	1,057,164
Deferred research and development obligations	514,483	490,113
Operating lease liability, current portion	53,476	48,059
Total current liabilities	2,077,176	2,251,781
Non-current liabilities:
Operating lease liability, net of current portion	48,091	88,870
Total liabilities	7,393,554	2,340,651
Commitments and contingencies (Note 5)
Stockholders’ equity:
Preferred stock, $.0001 par value: Authorized shares - 5,000,000; none issued and outstanding	0	0
Authorized shares - 100,000,000; issued shares - 41,842,873 and 41,064,563, outstanding shares - 29,589,371 and 28,811,061 as of September 30, 2024, and December 31, 2023, respectively	41,843	41,065
Additional paid-in capital	106,835,784	105,044,756
Treasury stock, shares held at cost - 12,253,502	(18,929,915)	(18,929,915)
Accumulated deficit	(84,535,600)	(80,277,321)
Total stockholders’ equity	3,412,112	5,878,585
Total liabilities and stockholders’ equity	10,805,666	8,219,236
Nonrelated Party [Member]
Current liabilities:
Accrued interest	80,000	0
Non-current liabilities:
Convertible notes, net of issuance costs	3,902,435	0
Related Party [Member]
Current liabilities:
Accrued interest	28,000	0
Non-current liabilities:
Convertible notes, net of issuance costs	$ 1,365,852	$ 0