Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues:
Contract revenue	$ 1,367,574	$ 990,971	$ 2,144,858	$ 2,321,855
Grant revenue	357,971		700,460
Total revenues	1,725,545	990,971	2,845,318	2,321,855
Cost of revenues	(1,493,676)	(677,167)	(2,472,597)	(1,764,482)
Gross profit	231,869	313,804	372,721	557,373
Operating expenses:
Research and development	1,170,333	1,783,714	2,973,693	3,001,254
General and administrative	650,826	846,919	1,382,419	1,611,138
Total operating expenses	1,821,159	2,630,633	4,356,112	4,612,392
Loss from operations	(1,589,290)	(2,316,829)	(3,983,391)	(4,055,019)
Interest income, net	32,948	5,231	49,843	9,984
Net loss	$ (1,556,342)	$ (2,311,598)	$ (3,933,548)	$ (4,045,035)
Basic net loss per share	$ (0.18)	$ (0.41)	$ (0.45)	$ (0.73)
Diluted net loss per share	$ (0.18)	$ (0.41)	$ (0.45)	$ (0.73)
Basic weighted average common shares outstanding	8,742,569	5,601,879	8,738,728	5,537,164
Diluted weighted average common shares outstanding	8,742,569	5,601,879	8,738,728	5,537,164