Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Revenue by Customer

The following table presents our revenue by customer, on a proportional basis, for the periods indicated:

	Years ended December 31,
	2018		2017		Variance
U.S. Department of Defense	46.3	%	69.0	%	(22.7	)%
Incuron, LLC	53.7	%	31.0	%	22.7	%
	100.0	%	100.0	%	—	%

Equipment Useful Lives

Equipment is depreciated using the straight-line method over the estimated useful lives of the respective assets as follows:

Asset Category	Estimated Useful Life (in Years)
Laboratory equipment	5
Furniture and fixtures	5
Computer equipment	3

Changes in Accumulated Other Comprehensive Income (Loss)

The following table presents the changes in accumulated other comprehensive loss for the year ended December 31, 2018.

	Unrealized gain (loss) on available-for-sale securities			Gains and losses on foreign exchange translations			Total
Beginning balance	$	(1,924	)	$	(514,533	)	$	(516,457	)
Other comprehensive income (loss) before reclassifications	1,924			(96,837		)	(94,913		)
Ending balance	$	—		$	(611,370	)	$	(611,370	)

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The Company has excluded the following securities from the calculation of diluted net loss per share because all such securities were antidilutive for the periods presented:

	As of December 31,
Common Equivalent Securities	2018	2017
Warrants	528,054	710,174
Options	160,076	211,487
Total	688,130	921,661