1. Department of Biology, Section for Cell and Neurobiology, University of Copenhagen, Copenhagen DK-2100, Denmark
2. Deanery of Biomedical Sciences, College of Medicine and Veterinary Medicine, University of Edinburgh, Edinburgh EH8 9AG, UK
3. Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK
4. Department of Veterinary and Animal Sciences, Section for Pathobiological Sciences, University of Copenhagen DK-1870, Frederiksberg, Denmark