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  • Title: The effects of leukemosuppressive immunotherapy on thymic infectious cell centers in AKR mice.
    Author: Buckheit RW, Liberman SN, Bolognesi DP, Weinhold KJ.
    Journal: Thymus; ; 12(3):143-56. PubMed ID: 3266951.
    Abstract:
    Although cortical thymocytes were found to be the predominant ecotropic and MCF-virus producers in the thymus of leukemia prone AKR mice the initial ecotropic retrovirus producing cells have been detected among a low density subpopulation of thymocytes including both PNA(+) and PNA(-) cells. Leukemosuppressive anti-viral treatment of these animals results in several important changes in the AKR thymus, including the elimination of virus producing cells, the induction of cellular phenotypic alterations, a decreased ability to bind ecotropic and MCF virus, a resistance to challenge with leukemogenic exogenous retroviruses, and the apparent elimination of a population of virus producing radioresistant cells. In addition, complement-mediated depletion with anti-viral IgG resulted in the complete elimination of proliferating thymocytes. These results suggest that passive anti-viral immunotherapy effectively eliminates a population of thymocytes which serve as the neonatal source of endogenous retroviruses and interferes with the earliest stages of leukemogenesis in AKR mice.
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