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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 | 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: Inflammation Drives Gut Bacteria Evolution

Inflammation Drives Gut Bacteria Evolution

By | March 16, 2017

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

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image: Human Gut Microbe Transplant Alters Mouse Behavior

Human Gut Microbe Transplant Alters Mouse Behavior

By | 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: How Much Do Sex Differences Matter in Mouse Studies?

How Much Do Sex Differences Matter in Mouse Studies?

By | February 24, 2017

Examining both male and female model organisms is worth the extra effort and added costs, most experts maintain, but whether the results translate to human studies is less clear.  

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NASA researchers have discovered ancient microbes locked inside minerals, suggesting a possible niche for interstellar life.

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image: Toward Killing Cancer with Bacteria

Toward Killing Cancer with Bacteria

By | February 8, 2017

Researchers employ an engineered microbe to destroy tumor cells in mice.

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image: Discovering Novel Antibiotics

Discovering Novel Antibiotics

By | February 1, 2017

Three methods identify and activate silent bacterial gene clusters to uncover new drugs

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