CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)	Jun. 30, 2023	Dec. 31, 2022
CURRENT ASSETS
Cash and cash equivalents	$ 9,837,133	$ 9,603,242
Marketable securities	27,956,325	31,818,020
Receivables	547,580	547,580
Prepaid expenses and other current assets	583,835	919,892
TOTAL CURRENT ASSETS	38,924,873	42,888,734
PROPERTY AND EQUIPMENT, net	4,789,786	4,588,030
OTHER ASSETS
Lease right-of-use assets, net	2,028,367	2,349,974
Other assets	268,172	268,172
TOTAL ASSETS	46,011,198	50,094,910
CURRENT LIABILITIES
Accounts payable and accrued expenses	5,115,182	4,834,683
Accounts payable and accrued expenses, related party	18,628	89,234
Lease liabilities, current	707,425	682,039
Deferred revenue, current	29,312,439	17,980,599
TOTAL CURRENT LIABILITIES	35,153,674	23,586,555
LONG-TERM LIABILITIES
CIRM liability	3,376,259	3,376,259
Lease liabilities, net of current	1,518,173	1,878,070
Deferred revenue, net of current	3,231,929	9,467,932
TOTAL LONG-TERM LIABILITIES	8,126,361	14,722,261
TOTAL LIABILITIES	43,280,035	38,308,816
COMMITMENTS AND CONTINGENCIES (NOTE 6)
STOCKHOLDERS' EQUITY
Preferred stock, $0.001 par value, 5,000,000 shares authorized, none issued and outstanding
Common stock, $0.001 par value, 50,000,000 shares authorized, 25,764,312 and 25,241,402 shares issued and outstanding, respectively	25,764	25,241
Additional paid-in capital	154,740,362	148,735,420
Accumulated other comprehensive income	179,693	105,244
Accumulated deficit	(152,214,656)	(137,079,811)
TOTAL STOCKHOLDERS' EQUITY	2,731,163	11,786,094
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 46,011,198	$ 50,094,910