1 Comparative Immunology Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland.
2 Centre for Colorectal Disease, Education and Research Centre, St. Vincent's University Hospital, Dublin 4, Ireland; School of Medicine and Medical Sciences, University College Dublin, Dublin 4, Ireland.
3 Comparative Immunology Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland; School of Medicine, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland. Electronic address: cliona.ofarrelly@tcd.ie.