Figure 5.
Intratumoral microbiota drives primary mammary tumor growth through modulation of proliferation and immune infiltrate. A. Uninfected 4T1 tumor volume B. Control diet-derived fecal conditioned media infected 4T1 breast tumor volume over time. C. Lard diet-derived fecal conditioned media infected 4T1 breast volume over time. D. Tumor volume over time of uninfected 4T1 tumor-bearing mice treated with 5 mg/kg LPS weekly. E. Tumor proliferation as determined by Ki67 immunoreactivity. F. Gram-positive bacteria content in 4T1 breast tumors. G. LPS positive bacteria content in 4T1 tumors. H. Infiltrating tumor-associated macrophage content in 4T1 tumors was determined by F4/80 immuno-reactivity. n=6–9.*p<0.05