FIG. 1.
F. tularensis LVS association with and internalization by TC-1 lung epithelial cells. (A) Percentage of TC-1 cells with associated live or PFA-fixed LVS at designated times postinoculation. *, Data are significantly different from untreated control data (P < 0.01 by paired two-tailed t test). (B) Percentages of TC-1 cell-associated live or PFA-fixed LVS that are intracellular at the designated times postinoculation.