Figure 2.

Abundance (mean ± SE) of Salmonella Heidelberg (SH, donor), S. Typhimurium (ST, recipient), and S. Typhimurium transconjugants (ST-T) in fecal samples from mice that received both the recipient and donor inoculation following different pre-treatments. The pre-treatments include no antibiotic (None, A), ampicillin (Amp, B), streptomycin (Strep, C), and sulfamethazine (Sulf, D). The y-axis shows the logarithmic scale of the colony-forming units per gram of feces (log₁₀ CFU g⁻¹), and the x-axis denotes the days post-infection (DPI). The dash lines represent the detection limit of 2.2 log₁₀ CFU g⁻¹.