Note 5 - Accounts Receivable

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Loans, Notes, Trade and Other Receivables Disclosure [Text Block]

5

. Accounts Receivable

Our accounts receivable represent amounts due to us from royalties, collaborators, and, to a small extent, sales of research reagents, and consisted of the following at

December 31, 2018

and

2017:

	2018		2017
Royalties	$	3,151	$	3,683
Other		652		289
Accounts receivable, net	$	3,803	$	3,972