The left image provides a “microbiome by the numbers” illustration to emphasize that microbes and their genomes comprise a huge amount of the variability of each person. The right image shows various places on or in the body where microbes live.
Credit left image: Human Microbome (accessed 17 December 2018) http://worldmicrobiomeday.com/human-microbiome/
Credit right image: Modified from National Human Genome Research Institute, NIH News (accessed 17 December 2018) https://www.genome.gov/27549144/
Read more at
N. R. Gough, Cancers with a possible bacterial contribution. BioSerendipity (18 December 2018) https://www.bioserendipity.com/cancers-with-a-possible-bacterial-contribution/