Note 8 - Commitments

6 Months Ended

Jun. 30, 2018

Notes to Financial Statements

Commitments Disclosure [Text Block]

8.         Commitments

We lease approximately

8,400

square feet of office and laboratory space pursuant to an operating lease which expires on

December 31, 2018,

with annual extension options through

December 31, 2022.

As of

June 30, 2018,

our future minimum lease payments total

$78,273

all of which will be payable during

2018.

In the normal course of business, we

may

enter into various firm purchase commitments related to our research-related activities and, as of

June 30, 2018,

such unrecorded outstanding purchase commitments totaled approximately

$248,000,

all of which we expect to be reimbursable to us pursuant to our existing government grants.