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  • Title: Specific and nonspecific antitumor immunity. III. Specific T lymphocyte-mediated cytolysis of P815 mastocytoma and SL2 lymphoma by draining lymph node cells from syngeneic tumor-bearing DBA/2J mice.
    Author: Germain RN, Williams RM, Benacerraf B.
    Journal: Am J Pathol; 1976 Dec; 85(3):661-74. PubMed ID: 826167.
    Abstract:
    Tumor-specific cytolytic activity, as measured by the 51Cr release assay, has been demonstrated in the draining lymph node cells from DBA/2 mice bearing the syngeneic P815 mastocytoma or SL2 lymphoma. This lytic activity is mediated by cytolytic T lymphocytes (CTL), since cytotoxicity is eliminated by treatment of the effector cells with anti-Thy 1.2 (theta) serum plus complement but is enhanced or unaffected by anti-Thy 1.2 serum alone, antimouse immunoglobulin plus complement, normal or aggregated mouse immunoglobulin, or removal of adherent cells. The time course of the CTL response has been analyzed and is similar for both P815 and SL2, with a peak around Days 10 to 12 after tumor grafting. Detectable CTL activity then wanes despite continued antigenic stimulation from the growing tumor. The ability of the immunotherapeutic agent Corynebacterium parvum to augment such specific CTL responses is documented as one antitumor pathway by which this agent may act.
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