There may be as many as 39 trillion microbes living on and in us. That means we carry more microbial cells than we do human cells! These microbes cover nearly every surface of the human body that is exposed to the outside world.
There may be as many as 39 trillion microbes living on and in us. That means we carry more microbial cells than we do human cells! These microbes cover nearly every surface of the human body that is exposed to the outside world.