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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Revenue $ 1,951,351 $ 1,851,892
Operating expenses:    
Research and development 1,287,621 2,129,672
General and administrative 2,348,361 1,471,067
Total operating expenses 3,635,982 3,600,739
Operating income (loss) (1,684,631) (1,748,847)
Other income:    
Interest income 14,994 1,512
Total other income 14,994 1,512
Net loss (1,669,637) (1,747,335)
Preferred dividend (123,727) (92,774)
Net loss attributable to common stockholders $ (1,793,364) $ (1,840,109)
Net loss per share attributable to common stockholders - basic and diluted (in usd per share) $ (1.16) $ (1.60)
Weighted-average number of common shares outstanding - basic and diluted 1,539,388 1,147,491
Grant Revenue    
Revenue $ 1,951,351 $ 1,851,892