How many different organisms live on/in the human body?

Question

apart from the lice in your pubic hair?

Answer 1

I don't know how many species there are, but there are between ten and twenty times more microbes (bacteria, etc.) in the human body than there are human cells, according to Scientific American and National Public Radio.

Answer 2

hundreds

Answer 3

Trillions.

Your intestines alone house about 10^13 bacteria.

Answer 4

I was told a while ago at uni that we have approx 10^14 cells in our body and approx 10^15 bacteria at any one time (including the intestinal bacteria that is)