FIG. 1.

The effect of priming MDM with IFN-γ for 72 h on cell association and internalization of S. enterica serovar Typhimurium over a 15-min incubation at 4°C or 37°C measured by fluorescence microscopy. White columns represent total cell-associated bacteria, and gray columns represent cell-associated bacteria that were internalized (90% of cell-associated bacteria in warm primed and unprimed cells). Figures are derived from triplicate data for eight different subjects for each condition. *, P = 0.035; **, P = 0.025.