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  • Title: Lyt-2- T cell-independent functions of Lyt-2+ cells stimulated with antigen or concanavalin A.
    Author: von Boehmer H, Kisielow P, Leiserson W, Haas W.
    Journal: J Immunol; 1984 Jul; 133(1):59-64. PubMed ID: 6202792.
    Abstract:
    Approximately 30% of cytolytic Lyt-2+ clones from primed mice are able to proliferate autonomously, i.e., independent of IL 2 derived from Lyt-2- cells after antigenic stimulation. H-2K- or -D-restricted induction of Lyt-2+ cells to autonomous proliferation requires Ia+ stimulator cells. A strict correlation was observed between the ability of Lyt-2+ clones to proliferative autonomously and to induce DH. Eventually, the growth of all Lyt-2+ cytolytic clones becomes dependent on exogenous IL 2, and their ability to induce DH is lost. Small Lyt-2+ cells can also be induced in primary cultures by antigen or concanavalin A to proliferate in the absence of exogenous IL 2. The frequency of autonomously proliferating small Lyt-2+ cells is the same as that of small Lyt-2+ cells proliferating in the presence of exogenous IL 2. IL 2 derived from Lyt-2- cells can augment proliferation of Lyt-2+ cells, but is not obligatory.
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