Consolidated Statements of Operations - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Revenues:
Contract revenue	$ 3,215,639	$ 3,965,496
Grant revenue	1,414,277	1,275,952
Total revenues	4,629,916	5,241,448
Cost of revenues	(3,567,415)	(4,597,715)
Gross profit	1,062,501	643,733
Operating expenses:
Research and development	8,122,610	6,750,954
General and administrative	3,480,912	2,951,760
Total operating expenses	11,603,522	9,702,714
Loss from operations	(10,541,021)	(9,058,981)
Other income:
Foreign currency transaction (loss)/gain	(7,809)	437
Interest income	148,968	158,569
UK research and development incentives	433,594
Net loss before income taxes	(9,966,268)	(8,899,975)
Income tax benefit	610,676
Net loss	$ (9,355,592)	$ (8,899,975)
Basic and diluted net loss per share	$ (0.48)	$ (0.68)
Basic and diluted weighted average common shares outstanding	19,376,508	13,178,154