Fas (Apo-1/CD95) – Ligand expression on neoplastic plasma cells and its role for the expansion of the neoplastic clone. Posted byadmin 27. July 1997 Greil, R, Villunger, A, Egle, A, Marschitz, L, Kos, M, Bock, G, Ludwig, H, Geley, S, Kofler, R