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Absence of generalized immunosuppression in C57B1/6 mice during progressive growth of syngeneic T-lymphoma EL-4 and of Lewis 3LL lung carcinoma

Journal Article · · Bull. Exp. Biol. Med. (Engl. Transl.); (United States)
DOI:https://doi.org/10.1007/BF00839614· OSTI ID:5779688
The authors describe the proliferative response of lymphocytes to mitogens and the generation of allospecific CTL in vivo were investigated in C57BL/6 mice during progressive growth of syngeneic T lymphoma EL-4 and Lewis carcinoma 3LL. Interleuken 2 activity was estimated from the incorporation of /sup 3/H-thymidine into 4-day T blast cells. Radioactivity of the samples was determined on a Packard-Tricarb scintillation beta-counter, after sedimentation on filters of the material precipitated by TCA. Spleen cells of immunized mice were used as the source of CTL in the 4-hourly test of /sup 51/Cr release from target cells. It is concluded that the level of Interleuken 2 production in mice with tumors EL-4 and 3LL was high enough to generate an effective CTL response and that the absence of CTL response to a syngeneic tumor cannot be explained by a nonspecific suppressor effect of the tumor carrier state on the immune system.
Research Organization:
Research Institute of Human Morphology, Moscow, USSR
OSTI ID:
5779688
Journal Information:
Bull. Exp. Biol. Med. (Engl. Transl.); (United States), Journal Name: Bull. Exp. Biol. Med. (Engl. Transl.); (United States) Vol. 101:6; ISSN BEXBA
Country of Publication:
United States
Language:
English

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