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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Cash flows from operating activities:    
Net loss $ (1,355,602) $ (1,258,856)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 3,795 9,930
Stock-based compensation expense 258,396 132,913
Changes in assets and liabilities:    
Grant funds and other receivables 57,568 59,758
Prepaid expenses and other current assets (30) 41,695
Accounts payable and accrued expenses 262,064 252,802
Total adjustments 581,793 497,098
Net cash used in operating activities (773,809) (761,758)
Cash flows from investing activities:    
Purchase of property and equipment (4,272)
Net cash used in investing activities (4,272)
Cash flows from financing activities:    
Net proceeds from sale of preferred stock 740,000 590,000
Proceeds from issuance of note payable 50,000
Principal repayment of note payable (5,209)
Net cash provided by financing activities 734,791 640,000
Net decrease in cash and cash equivalents (43,290) (121,758)
Cash and cash equivalents at beginning of period 259,701 312,727
Cash and cash equivalents at end of period $ 216,411 $ 190,969