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  • Title: Altered lymphocyte functions in rats bearing syngeneic Moloney sarcoma tumors. I. Mitogen responses, mixed lymphocyte reactions (MLR) and mixed lymphocyte-tumor reactions (MLTR).
    Author: Veit BC, Feldman JD.
    Journal: J Immunol; 1976 Aug; 117(2):646-54. PubMed ID: 133190.
    Abstract:
    Impairment of mitogen responses to Con A and LPS and of MLR and MLTR was detected in the spleens of rats bearing syngeneic Moloney sarcoma tumors. Depressed responses of both T cell and Ig+ cell populations were observed. During the observation period of 6 to 10 days post-tumor inoculation when maximal T cell-mediated cytotoxicity was observed in spleen and draining lymph node cells, spleen cells showed marked impairment in response to stimuli mentioned above. By contrast, draining lymph node cell activity was either unaltered or somewhat elevated above the level of activity measured in normal control populations. Data presented in this and an accompanying paper strongly indicate that macrophages are activated as immunosuppressor cells in tumor-bearing rats.
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