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Sewage Reflects the Microbiomes of Human Populations

By analyzing sewage from 71 cities, the researchers demonstrated that geographically distributed U.S. populations share a small set of bacteria whose members represent various common community states within U.S. adults.
 
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NEWTON, R. J. et al. (2015): Sewage Reflects the Microbiomes of Human Populations. In: mBio: Volume 6 URL [Accessed: 02.08.2018] PDF