Figure 1

Murine mammary gland response to inoculation with different doses of Staphylococcus chromogenes IM. A Bacterial load, D IL-8 and E LCN2 concentrations in mouse mammary glands harvested 24 h after intraductally inoculating Staphylococcus chromogenes IM at serial doses ranging from 10² to 10⁷ CFU, as well as representative H&E-stained sections of B sham (PBS) or C S. chromogenes IM-inoculated mammary glands (10⁴ CFU) at 24 h post-inoculation. Data are shown as individual points with a line indicating the mean and an error bar representing the standard error of the mean (SEM). Double (**) and triple (***) asterisks indicate respectively p < 0.01 and p < 0.001, whereas “ns” indicates non-significance corresponding to a p > 0.01. Pictures were taken at a 10 × and 40 × magnification, with scale bars indicating 100 µm and 25 µm, respectively.