8Linaley PS. Distinct roles for CD28 and cytotoxic T lymphocyte- associated moledule-4 receptors during T cell activation. J Exp Med, 1995,182:459.
9Rao AS, Phil D,Starzl TE.An attempt to induce tolerance with infusion of donor bone marrow in organ allograft recipients. Adv Exp Med Biol,1997,417:269-274.
10Higuchi M,Zeng D. Immune tolerance to combined organ and bone marrow transplants after fractionated lymphoid irradiation involves regulatory NK T cells and clonal deletion.J Immunol, 2002, 169: 5564-5570.
