Bacteria Outnumber Cells in Human Body The human body contains 20 times more microbes than it does cells. In fact, a visitor from outer space might think the human race is just one big chain of microbe hotels. NPR's Robert Krulwich reports.

Bacteria Outnumber Cells in Human Body

The human body contains 20 times more microbes than it does cells. In fact, a visitor from outer space might think the human race is just one big chain of microbe hotels. NPR's Robert Krulwich reports.