Note 12 - Grants and Collaboration Revenue

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Government Grants and Contracts [Text Block]

12 . Grants and Collaboration Revenue

We receive payments from government entities under our grants from the National Institute of Allergy and Infectious Diseases (NIAID) and from the U.S. Department of Defense in support of our vaccine research and development efforts. We record revenue associated with government grants as the reimbursable costs are incurred. During

2018,

2017,

and

2016,

we recorded

$934,575,

$980,270,

and

$828,918,

respectively, of revenue associated with these grants. As of

December 31, 2018,

there is an aggregate of

$2,589,247

in remaining grant funds available for use during

2019

and

2020.

During

2018,

2017,

and

2016,

we recorded

$28,628,

$95,000,

and $-

0

-, respectively, of revenues associated with research collaboration agreements with several

third

parties.