Certain gut E. coli strains produce a genotoxin that damages DNA, possibly triggering first step toward colon cancer https://cen.acs.org/biological-chemistry/microbiome/E-coli-toxin-linkedto-colon/97/i7 … Very interesting work from @BalskusLab http://science.sciencemag.org/content/363/6428/689 … http://science.sciencemag.org/content/363/6428/eaar7785 … pic.twitter.com/UK49UonxKX