Limited in vivo reactivity of polyclonal effector cytotoxic T cells towards altered peptide ligands.
T cell responses are regulated by the affinity/avidity of the T cell receptor for the MHC/peptide complex, available costimulation and duration of antigenic stimulation. Altered peptide ligands (APLs) are usually recognized with a reduced affinity/avidity by the T cell receptor and are often able to only partially activate T cells in vitro or may even function as antagonists. Here we assessed the ability of APLs derived from peptide p33 of lymphocytic choriomeningitis virus (LCMV) to mediate ...Expand abstract
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