Proteasomes generate spliced epitopes by two different mechanisms and as efficiently as non-spliced epitopes by Ebstein, F, Textoris-Taube, K, Keller, C, Golnik, R, Vigneron, N, Van den Eynde, B, Schuler-Thurner, B, Schadendorf, D, Lorenz, F, Uckert, W, Urban, S, Lehmann, A, Albrecht-Koepke, N, Janek, K, Henklein, P, Niewienda, A, Kloetzel, P, Mishto, M