Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Operating activities:
Net loss	$ (3,763,148)	$ (3,933,548)
Adjustments to reconcile net loss to net cash used in operating activities:
Amortization and depreciation	22,992	22,384
Non-cash lease expenses	60,041
Share-based compensation	152,465	198,395
Issuance of common stock for services	114,557
Realized gain on sale of office furniture	(3,843)
Change in operating assets and liabilities:
Contracts and grants receivable	(473,830)	(604,484)
Prepaid expenses	7,504	140,356
Income tax receivable		416,810
Operating lease liability	(59,197)
Deferred revenue	69,976	56,692
Accounts payable and accrued expenses	1,308,577	379,206
Accrued compensation	(244,466)	(276,903)
Total adjustments	954,776	332,456
Net cash used in operating activities	(2,808,372)	(3,601,092)
Investing activities:
Purchases of office furniture and equipment		(1,924)
Proceeds from the sale of office furniture	5,500
Net cash provided by (used in) investing activities	5,500	(1,924)
Financing activities:
Proceeds from issuance of common stock pursuant to FBR At Market Sales Issuance Agreement	842,244
Costs associated with FBR At Market Sales Issuance Agreement	(29,291)
Proceeds from issuance of common stock pursuant to the equity line		38,400
Financing lease principal repayments	(3,317)
Net cash provided by financing activities	809,636	38,400
Effect of foreign exchange rate on cash and cash equivalents	(4,192)
Net decrease in cash and cash equivalents	(1,997,428)	(3,564,616)
Cash and cash equivalents at beginning of period	8,983,717	7,809,487
Cash and cash equivalents at end of period	6,986,289	4,244,871
Supplemental information:
Cash paid for state income tax	5,000
Cash paid for lease liabilities:
Operating lease	69,750
Financing lease	4,272
Non-cash activities:
Right-of-use assets and lease liabilities recognized on January 1, 2019	255,962
Deferred issuance cost included in accounts payable	18,537	$ 140,246
Deferred issuance cost reclassified to additional-paid-in capital	7,679
Issuance of restricted common stock to vendor for website re-development	$ 46,500