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This is Scientific American 60-Second Science. I'm Sophie Bushwick. Got a minute?

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When bacteria, like some strains of E.coli, enter the water supply they can threaten public health.

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To prevent such outbreaks, it's useful to know how these microbes behave in their natural environments, rather than just in a petri dish.

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And one such environment is inside the human body.

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In places without access to large sewage systems, bacteria-laden human waste passes into septic tanks.

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There it's broken down before moving on into the groundwater.

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To study how a pathogenic strain of E.coli behaves in this entire system, researchers had to build a replica.

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Which includes an artificial human colon.

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The work is published in Applied and Environmental Microbiology.

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Did the counterfeit colon increase our E.coli comprehension?

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Well, the E.coli did behave differently than the same bacteria in isolation.

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They moved more slowly, and were more likely to form biofilms, slimy microbial communities that are hardier than individuals.

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Which means the bacteria could hang around in the groundwater longer.

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And that's a finding we don't want to flush away.

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Thanks for the minute, for Scientific American 60-Second Science. I'm Sophie Bushwick.

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