Figure 5

Cell-associated and intracellular growth of ATCC14028 and Δ invA mutants. Recovery of cell-associated (extracellular but firmly attached + intracellular) serotype Typhimurium and ΔinvA mutant in the cecum of chicks (A) and mice (B) and intracellular wild type and ΔinvA mutant in the cecum of chicks (C) and mice (D) is shown as the mean log ratio of wild type versus mutant. Error bars denote standard error and asterisks indicate a significant difference relative to the ratio of wild type vs. mutant in the inoculum at P < 0.05.