If you're haunted by that, don't study microbiology. The human body, consisting of about 100 trillion cells, carries about ten times as many microorganisms in

If you're haunted by that, don't study microbiology. The human body, consisting of about 100 trillion cells, carries about ten times as many microorganisms in the intestines. [1] The total number of bacteria on an average human has been estimated at 10^12 [2] ref: [1] http://en.wikipedia.org/wiki/Gut_flora http://en.wikipedia.org/wiki/Gut_flora [2] http://en.wikipedia.org/wiki/Skin_flora http://en.wikipedia.org/wiki/Skin_flora