In a May 24, 2018 NCI (National Cancer Institute) study, scientists found a connection between bacteria in the gut and anti-tumor immune responses in the liver. This effectively changes the composition of immune cells of the liver. Tim Greten, M.D. (NCI) (CCR) Center for Cancer Research, led the study, saying, “This is a great example of how what we learn from basic research can give us insight into cancer and possible treatments.”