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Peptide specificity of T cell lines. Left panel: 12 T cell lines generated by stimulation with PPD were tested with Ag85B peptides; 11/12 exhibited a stimulation index (SI) >2 with PEP11. Right panel: 14 T cell lines generated by stimulation with Ag85 were tested with the panel of peptides; 14/14 exhibited an SI >2 with PEP11.
