PD-1 expression is upregulated on adapted T cells in experimental autoimmune encephalomyelitis but is not required to maintain a hyporesponsive state

Iris Mair, Dario Besusso, Louise Saul, Sarju D Patel, Rahul Ravindran, Rhoanne C McPherson, Melanie D Leech, Richard A O'Connor, Stephen M Anderton, Richard J Mellanby