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A mouse study reveals a causal link between changes in intestinal microbiota and increasing inflammation as the rodents age.

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Mice exposed to low doses of penicillin in utero or as young pups exhibited long-term behavioral differences not seen in their non-exposed counterparts, according to a study.

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Recolonizing middle-aged animals with bacteria from younger ones kept killifish alive longer than usual, researchers report.

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image: In Certain Social Bees, Gut Microbiomes Follow Phylogeny

In Certain Social Bees, Gut Microbiomes Follow Phylogeny

By Ashley P. Taylor | March 29, 2017

Corbiculate bees and their gut-dwelling microbes have been coevolving since the social species evolved from their solitary ancestors around 80 million years ago, scientists suggest. 

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image: Q&A: Marching for Science in Memphis

Q&A: Marching for Science in Memphis

By Tracy Vence | March 22, 2017

A conversation with activist and undergraduate student Sydney Bryant

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image: Opinion: After We March

Opinion: After We March

By Sheril Kirshenbaum | March 16, 2017

How to become—and stay—involved in science policy 

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image: Inflammation Drives Gut Bacteria Evolution

Inflammation Drives Gut Bacteria Evolution

By Ruth Williams | March 16, 2017

Viruses within Salmonella rapidly spread genes throughout the bacterial population during a gut infection, scientists show.

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image: Q&A: Marching for Science in Los Angeles

Q&A: Marching for Science in Los Angeles

By Joshua A. Krisch | March 3, 2017

A conversation with graduate student Alex Bradley

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image: Human Gut Microbe Transplant Alters Mouse Behavior

Human Gut Microbe Transplant Alters Mouse Behavior

By Anna Azvolinsky | March 1, 2017

Fecal transplants from humans with irritable bowel syndrome and anxiety into mice lead to similar symptoms and anxiety-like behavior in the rodents, researchers report.  

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image: Marching for Science in San Diego

Marching for Science in San Diego

By Tracy Vence | February 27, 2017

A conversation with postdoc Robert Cooper, entrepreneur Alex Eyman, and lawyer Melissa Slawson

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