Micrograph of Staphylococcus epidermidis. These bacteria are commonly present on healthy human skin. By NIAID (Staphylococcus epidermidis Bacteria) [CC BY 2.0 (http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons.
Read more: N. R. Gough, Cancer-Protective Bacteria Found on Human Skin. BioSerendipity (6 March 2018). https://www.bioserendipity.com/cancer-protective-bacteria-found-on-human-skin/