CTL activity directed against J774A.1 macrophage-like
cells on days 7, 12, and 19 after infection with R.
australis at a multiplicity of infection of 1:1 and an
effector-to-target cell ratio of 100, measured as the percentage of
lysis of target cells. MHC-I-matched target-effector pairs are
indicated as follows: ■, R. australis-infected
macrophage-like cells and immune lymphocytes;
, R
australis-infected macrophage-like cells and
naïve lymphocytes; □, uninfected macrophage-like cells
and immune lymphocytes; ▩, uninfected macrophage-like cells and
naïve lymphocytes.