Figure 3

L. intracellularis -specific IFN-γ production. L. intracellularis-specific IFN-γ production by whole-blood cultures co-stimulated with IL-18. Graphs present IFN-γ responses from individual pigs at the time points indicated in group RE, TC, and CC. Arrows indicate inoculation with L. intracellularis at day 0 and at day 49.