Conflicting selective forces affect T cell receptor contacts in an immunodominant human immunodeficiency virus epitope. by Iversen, A, Stewart-Jones, G, Learn, G, Christie, N, Sylvester-Hviid, C, Armitage, A, Kaul, R, Beattie, T, Lee, J, Li, Y, Chotiyarnwong, P, Dong, T, Xu, X, Luscher, M, MacDonald, K, Ullum, H, Klarlund-Pedersen, B, Skinhøj, P, Fugger, L, Buus, S, Mullins, J, Jones, E, Van Der Merwe, P, Mcmichael, A