Scientists have found about 2,400 different germs living in the human belly button.
Sources
- Fascinating Facts About Your Body - WebMD (webmd.com)
- https://www.nationalgeographic.com/science/article/121114-belly-button-bacteria-science-health-dunn (nationalgeographic.com)
- https://news.ncsu.edu/2012/11/wms-belly-button-biodiversity/ (news.ncsu.edu)
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3492386/ (ncbi.nlm.nih.gov)
- https://www.amnh.org/explore/news-blogs/belly-button-microbiome (amnh.org)
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