Figure 1.

Recognition of the Tp1_214–224 epitope by CD8⁺ T-cell clones derived from animal 641 (A18/A18): The clones were tested using a 4-h ¹¹¹In-release assay with MHC class I A18⁺, T. annulata-infected target cells alone or incubated with 1 μg/mL of Tp1_214–224 peptide. Results are shown for target cells pulsed with Tp1_214–224 peptide. The level of killing of unpulsed T. annulata-infected target cells was <1% for all clones (data not shown).