The gut contains about 70 percent of your immune cells. Biofilms are a situation where infection essentially terraforms the body. I think it is a bit like how

The gut contains about 70 percent of your immune cells. Biofilms are a situation where infection essentially terraforms the body. I think it is a bit like how some plants grow in deserts and others grow on swamps, but larger forces determine what is desert and what is swamp.