Normal spleen cells cultured with TNP-modified syngeneic spleen cells fail to mount an anti-TNP PFC response to TNP-ficoll or TNP-red blood cells,but go on to generate cytotoxic T cells directed at hapten-modified H-2.These results suggest that hapten-modifeid spleen cells may differentially induce B-cell tolerance and T- (Ly 2,3) cell immunity. The differential response to modified self by lymphocyte subpopulations is discussed.

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