D. Gray: Immunological memory. Ann. Rev. Imm. 11 (1993), 49-... D. Gray: Regulation of immunological memory. Curr. Op. Imm. 6 (1994), 425-... C. Mackay: Homing of naive, memory and effective lymphocytes. Curr. Op. Imm. 5 (1993), 423-... C. Mackay: Immunological memory. Adv. Imm. 53 (1993), 217-... L. Picker/E. Butcher: Physiological and molecular mechanisms of lymphocyte homing. Ann. Rev. Imm. 10 (1992), 561-... Y. Shimizu/W. Newman/Y. Tanaka/S. Shaw: Lymphocyte interactions with endothelial cells. Imm. Today 13 (1992), 106-... J. Sprent: Lifespans of naive, memory and effector lymphocytes. Curr. Op. Imm. 5 (1993), 433-... J. Sprent: T and B memory cells. Cell 76 (1994), 315-... T. Springer: Traffic signals on endothelium for lymphocyte recirculation and leukocyte emigration. Ann. Rev. Phys. 57 (1995), 827-... Y. Tanaka/D. Adams/S. Shaw: Proteoglycans on endothelial cells present adhesion-inducing cytokines to leukocytes. Imm. Today 14 (1993), 111-...