New York Times- By Gina Kolata 

Monday, October 17, 2011

For years, Dr. Robert A. Holt, a genomics researcher at the British Columbia Cancer Agency, wrestled with a question about colon cancer. Might it be caused, or pushed along, by a bacterial infection?Cancers of the liver, stomach and cervix have all been linked to microbes, he knew. And if there is one place in the body with a lot of microbes, it is the colon Рmicrobial cells outnumber human cells there by a ratio of at least nine to one. Read the full article>>