Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues:
Contract revenue	$ 1,060,877	$ 1,367,574	$ 1,700,435	$ 2,144,858
Grant revenue	484,087	357,971	989,317	700,460
Total revenues	1,544,964	1,725,545	2,689,752	2,845,318
Cost of revenues	(1,086,814)	(1,493,676)	(2,014,738)	(2,472,597)
Gross profit	458,150	231,869	675,014	372,721
Operating expenses:
Research and development	1,853,950	1,170,333	3,496,668	2,973,693
General and administrative	769,091	650,826	1,643,300	1,382,419
Total operating expenses	2,623,041	1,821,159	5,139,968	4,356,112
Loss from operations	(2,164,891)	(1,589,290)	(4,464,954)	(3,983,391)
Other income, net	41,370	32,948	91,130	49,843
Net loss before income taxes	(2,123,521)	(1,556,342)	(4,373,824)	(3,933,548)
Income tax benefit			610,676
Net loss applicable to common stockholders	$ (2,123,521)	$ (1,556,342)	$ (3,763,148)	$ (3,933,548)
Basic & diluted net loss per share	$ (0.12)	$ (0.18)	$ (0.21)	$ (0.45)
Basic & diluted weighted average common shares outstanding	18,436,894	8,742,569	18,258,932	8,738,728