Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net loss	$ (2,560,094)	$ (2,170,162)	$ (3,271,701)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	19,801	28,027	28,780
Stock-based compensation expense	469,724	57,224	967,667
Changes in assets and liabilities:
Grant funds and other receivables	(62,056)	(31,684)	91,904
Prepaid expenses and other current assets	36,480	(13,314)	(5,626)
Accounts payable and accrued expenses	553,119	441,445	242,857
Total adjustments	1,017,068	481,698	1,325,582
Net cash used in operating activities	(1,543,026)	(1,688,464)	(1,946,119)
Cash flows from investing activities:
Purchase of property and equipment		(4,350)
Net cash used in investing activities		(4,350)
Cash flows from financing activities:
Net proceeds from sale of preferred stock	1,190,000	980,000
Net proceeds from sale of common stock		571,511	1,339,801
Proceeds from issuance of notes payable	300,000
Net cash provided by financing activities	1,490,000	1,551,511	1,339,801
Net decrease in cash and cash equivalents	(53,026)	(141,303)	(606,318)
Cash and cash equivalents at beginning of period	312,727	454,030	1,060,348
Cash and cash equivalents at end of period	$ 259,701	$ 312,727	$ 454,030