An article in the Harvard Crimson today tells of a possible association between cancer and bacteria. Bacteria called Fusobacteria have been found in large quantities in tumors of many colorectal cancer patients. The exact relationship between these kinds of bacteria and tumors has not been determined yet but more research will be done in order to figure this out. Infected tissue samples were examined through a process called Pathogen Sequencing. Advancements in DNA sequencing technology have made this discovery possible.
This bacteria hasn't been discovered to cause cancer but new discoveries could aid in the development of future treatments. It's kind of like the way HPV has been attributed to cervical cancer.
Link: Study May Link Bacteria to Cancer
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