Abstract
THE importance of the participation of thymus-derived lymphocytes in both humoral antibody production1,2 and cell-mediated anti-allograft immunity3 has been clearly demonstrated. Evidence for the involvement of thymus-derived cells in the rejection of xenografts is, however, largely indirect. In mice, antilymphocyte serum (ALS) prolongs the survival of xeno-grafted skin4 and promotes the growth of tumour xenograft5. This can be taken to imply that thymus-derived cells are involved in the rejection process because ALS is known to deplete preferentially the thymus-dependent areas of lymphoid tissue6. Raff7 has also shown that in ALS treated mice the percentage of theta (θ) positive cells in lymphoid organs is decreased.
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BEVERLEY, P., SIMPSON, E. Cytotoxic Activity in vitro of Thymus-derived Lymphocytes Sensitized to Xenograft Antigens. Nature New Biology 237, 17–18 (1972). https://doi.org/10.1038/newbio237017a0
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DOI: https://doi.org/10.1038/newbio237017a0