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Condensed Balance Sheets (Current Period Unaudited) - USD ($)
Sep. 30, 2019
Dec. 31, 2018
Current assets:    
Cash $ 2,548,434 $ 8,600,918
Accounts receivable 9,297
Prepaid expenses and other 258,714 236,851
Supplies 801,780 0
Total current assets 3,608,928 8,847,066
Property and equipment, net 23,747 24,354
Other assets:    
Security deposits 11,732 18,085
Intellectual property, net 423,923 379,451
Total other assets 435,655 397,536
Total assets 4,068,330 9,268,956
Current liabilities:    
Accounts payable and accrued expenses 475,048 295,069
Other current liabilities 62,184 92,752
Total current liabilities 537,232 387,821
Investment unit 0 0
Commitments and contingencies
Stockholders’ equity:    
Preferred stock $0.001 par value: 10,000,000 shares authorized; no shares issued and outstanding
Common stock $0.001 par value: 200,000,000 shares authorized; 15,842,855 and 15,239,148 shares issued and outstanding, respectively 15,843 15,240
Additional paid-in capital 41,569,745 38,690,586
Accumulated deficit (38,054,490) (29,824,691)
Total stockholders’ equity 3,531,098 8,881,135
Total liabilities and stockholders’ equity $ 4,068,330 $ 9,268,956