Microbial zoo of 10,000 germ species live in and on healthy people

Wednesday, June 13, 2012 | 5:06 p.m. CDT; updated 6:40 p.m. CDT, Wednesday, June 13, 2012

WASHINGTON — They live on your skin, up your nose, in your gut — enough bacteria, fungi and other microbes that collected together could weigh, amazingly, a few pounds.