Differential T cell signaling induced by antagonist peptide-MHC complexes and the associated phenotypic responses.

Abstract excerpt

Certain changes in TCR contact residues have been shown to have profound effects on the capacity of a peptide Ag to stimulate a T cell response. Although some of these changes apparently lead to a complete loss of the ability to interact with the TCR, others result in partial agonist activity (e.g., cytokine production without proliferation) or antagonist activity (i.e., the capacity to inhibit the engagement to...

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