Structural and regulatory diversity shape HLA-C protein expression levels by Kaur, G, Gras, S, Mobbs, J, Vivian, J, Cortes, A, Barber, T, Kuttikkatte, S, Jensen, L, Attfield, K, Dendrou, C, Carrington, M, McVean, G, Purcell, A, Rossjohn, J, Fugger, L