Numbers: Microbes, From the Tiny Genome to the 70 Trillion in Your Body

By Jeremy Jacquot
Oct 15, 2009 5:00 AMNov 12, 2019 5:54 AM
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Image: E. coli/Agricultural Research Service | NULL

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30 Million  Estimated number of microbial species. Of these, only 70 are known to cause disease. About 1,000 species normally live on the surface of human skin, according to a recent study by the National Human Genome Research Institute.

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