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Abstract
Tolerance to the TNP haptenic determinant was induced by a single intravenous injection of trinitrophenylated syngeneic cells. Syngeneic spleen or thymus cells were capable of acting as carriers for tolerance induction while syngeneic bone marrow cells were not. Syngeneic spleen cells depleted of θ-positive and adherent cells were also suitable carriers for tolerance induction. Sonicated haptenated spleen cells, but not sonicated haptenated bone marrow cells induced tolerance. The ability of haptenated cells to induce tolerance was not correlated with their localization in lymphoid organs. Furthermore, cells recovered from the spleens of lethally irradiated animals reconstituted with bone marrow cells 1 week previously were incapable of inducing tolerance after hapten-modification. However, after 3 weeks, spleen cells from bone marrow-reconstituted mice had acquired the ability to induce tolerance. These results suggest that only certain types of syngeneic cells have the ability to act as carriers for tolerance induction; merely being syngeneic, and therefore presumably nonimmunogenic, is not sufficient to permit the cell to act as a carrier for tolerance induction.
Published Version
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