This is E. coli. E. Coli is one of the trillions of microbial cells living inside you right now. In fact, 90% of your cells aren't even human - they're actually microbes. They are part of our microbiome - the body's resident microbe community - which helps us to digest food, strengthen our immunity and resist outside invaders. They may also influence disorders like cancer, obesity, asthma, and even autism.