WSU BIOL209 Microbiology

As Carl Zimmer notes, “The very fact that scientists are still so unsure of how many cells and bacteria are in each of us is pretty remarkable.”

90 percent of human cells are red blood cells, which don't contain DNA and aren’t capable of dividing. They’re rather poor excuses for cells—remove them from the equation and the 10:1 ratio reinstates itself.

And it’s probably wrong.