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Journal of Experimental Medicine, Vol 153, 811-822, Copyright © 1981 by Rockefeller University Press
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ME Sunday, B Benacerraf and ME Dorf
In the current study, we examine the mechanism of suppression of cutaneous sensitivity (CS) responses to 4-hydroxy-3-nitrophenyl acetyl succinimide ester. Intravenous administration of haptenated syngeneic spleen cells induces a state of hapten-specific tolerance involving I-J bearing suppressor T cells that function at either the induction phase or the effector phase of the CS response. The effective phase suppressor cells (Tse) are genetically restricted by both Igh and H-2 region genes. However, a third cell population is also required in he immune lymphocyte population for immune suppression. This third cell population, termed Ts3, is an I-J+, cyclophosphamide-sensitive T cell, as shown by reconstitution experiments. Further, the Tse-Ts3 interaction is restricted by genes in he H-2 and Igh gene complexes. The results are discussed with respect to the pathway of cellular interactions leading to immuno suppression.
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