Condensed Consolidated Balance Sheets (Unaudited) - USD ($)	Sep. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 3,742,941	$ 4,771,758
Marketable investment securities	16,080,691	17,263,788
Accrued interest income	91,482	52,254
Prepaid and other current assets	588,824	773,424
Total current assets	20,503,938	22,861,224
Property and equipment, net of accumulated depreciation of $1,207,726 and $1,182,191 respectively	170,627	116,095
Other assets	23,753	23,753
Total assets	20,698,318	23,001,072
Current liabilities:
Accounts payable	285,347	1,395,977
Accrued expenses	1,292,285	1,218,486
Warrant liability	3,586	17,166
Total current liabilities	1,581,218	2,631,629
Total liabilities	1,581,218	2,631,629
Commitments and contingencies (notes 7, 8, 9 and 10)
Stockholders’ equity:
Common stock, par value $0.0001 per share, 200,000,000 shares authorized; 5,348,276 and 5,316,166 issued, and 5,347,940 and 5,315,830 outstanding, respectively outstanding	8,863	8,860
Additional paid-in capital	220,690,052	220,171,250
Treasury stock at cost, 336 shares	(40,712)	(40,712)
Accumulated other comprehensive gain (loss)	9,942	7,259
Accumulated deficit	(201,551,045)	(199,777,214)
Total stockholders’ equity	19,117,100	20,369,443
Total liabilities and stockholders’ equity	$ 20,698,318	$ 23,001,072

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).

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- 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).