Mair, I, Besusso, D, Saul, L, Patel, S D, Ravindran, R, McPherson, R C, Leech, M D, O'Connor, R A, Anderton, S M & Mellanby, R J 2019, ' PD-1 expression is upregulated on adapted T cells in experimental autoimmune encephalomyelitis but is not required to maintain a hyporesponsive state ', European Journal of Immunology, vol. 49, no. 1, pp. 112-120 . https://doi.org/10.1002/eji.201847868