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Journal of Experimental Medicine, Vol 175, 305-308, Copyright © 1992 by Rockefeller University Press
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G Benichou, PA Takizawa, CA Olson, M McMillan and EE Sercarz
Department of Microbiology and Molecular Genetics, University of California Los Angeles 90024.
Peptides from donor major histocompatibility complex (MHC) molecules were examined for their activation of allogeneically primed T cells. After immunization with either allogeneic spleen cells or a skin allograft, primed T cells proliferate in response to peptides derived from polymorphic regions of alpha and beta chains of class II allo-MHC molecules. The results demonstrate that presentation of donor-MHC peptides by host-derived antigen-presenting cells is a common event in vivo. Thus, self-restricted T cell recognition of processed alloantigens may play a critical role in transplantation. An in-depth understanding of this response may result in the development of additional molecular therapies to combat allograft rejection.
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