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  • Title: Immunosuppression in a murine B cell leukemia (BCL1): role of an adherent cell in the suppression of primary in vitro antibody responses.
    Author: Anderson SA, Isakson PC, Puré E, Muirhead M, Uhr JW, Vitetta ES.
    Journal: J Immunol; 1981 Apr; 126(4):1603-7. PubMed ID: 6451649.
    Abstract:
    The ability of lymph node cells from mice bearing the BCL1 tumor to respond in vitro to mitogens, allogeneic cells, and both TI and TD antigens was investigated. The lymph nodes of such mice are not invaded with tumor cells and contain normal numbers of T and B cells. Nevertheless, at the peak of tumor burden in the spleen and blood (approximately 8 to 12 wk after injection with tumor cells), the lymph node cells from the tumor-bearing mice display markedly decreased responsiveness both to allogeneic cells and to antigens. In addition, small numbers of lymph node cells from the tumor-bearing mice suppress primary antibody responses of normal lymph node cells. This nonspecific suppression of antibody responses is mediated by a G-10 Sephadex adherent, non-T, non-B cell present in the nodes of the tumor-bearing mice. Since the BCL1 tumor model is in many respects similar to the prolymphocytic type of human chronic lymphocytic leukemia, the present results may be helpful in elucidating the mechanisms underlying the in vivo immunosuppression associated with lymphocytic neoplasms in humans.
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