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(A) Response of a T cell line (TCL P28 33mer) to varying concentrations of antigen peptide 5 in the presence of blocker peptide 22 at 0 µM (▲), 3 µM ( ), 10 µM (■), or 30 µM (●). (B) EC50 values obtained from (A) plotted against the corresponding concentration of blocker peptide 22.
