Koji Atarashi, Wataru Suda, Chengwei Luo et al. Ectopic colonization of oral bacteria in the intestine drives TH1 cell induction and inflammation. Science, 20 Oct 2017, 358(6361):359-365, doi:10.1126/science.aan4526 https://science.sciencemag.org/content/358/6361/359