Declaration of interest
M Olin and C Moertel are officers in OX2 Therapeutics, a spinoff company of the University of Minnesota studying the CD200 checkpoint and possible therapeutic interventions based on exploitation of the CD200 pathway. The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript apart from those disclosed.
Reviewer disclosures
Peer reviewers on this manuscript have no relevant financial or other relationships to disclose.