Fig. 3From: Supplemental invasion of Salmonella from the perspective of Salmonella enterica serovars Kentucky and TyphimuriumComparison of rate of invasion of Caco-2 cell monolayer. Strains are denoted along the x-axis. Bacteria number are expressed along the y-axis and estimated per mL for 1 h invasion period. Strains with the same letter are not significantly different at P ≤ 0.05Back to article page