Development of a ⁶⁴Cu-labeled CD4⁺ T cell targeting PET tracer: evaluation of CD4 specificity and its potential use in collagen-induced arthritis.

"Declarations Ethics approval and consent to participateAll applicable international, national and/or institutional guidelines for the care and use of animals were followed. All animal procedures were conducted under a protocol approved by the National Animal Experiments Inspectorate (license no. 2016-15-0201-00920). The study was carried out in compliance with the ARRIVE guidelines. Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding This research was funded by the European Union’s Horizon 2020 research and innovation programme [Grant agreement numbers 670261 (ERC Advanced Grant), 668532 (Click-It)], the Lundbeck Foundation, the Novo Nordisk Foundation, the Innovation Fund Denmark, the Danish Cancer Society, Arvid Nilsson Foundation, Svend Andersen Foundation, the Neye Foundation, the Research Foundation of Rigshospitalet, the Danish National Research Foundation [Grant number 126], the Research Council of the Capital Region of Denmark, the Danish Health Authority, the John and Birthe Meyer Foundation and Research Council for Independent Research. Andreas Kjaer is a Lundbeck Foundation Professor."