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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: Starvation Response Triggers Melanoma Invasion

Starvation Response Triggers Melanoma Invasion

By | April 1, 2017

Through similar mechanisms, amino acid depletion in culture and cytokine activity in the tumor microenvironment prompt cancer cells to metastasize.

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image: Infographic: Inside Melanoma Invasion

Infographic: Inside Melanoma Invasion

By | April 1, 2017

See what cytokine activity and cellular starvation have to do with cancer metastasis.

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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: Image of the Day: Tubular Origins

Image of the Day: Tubular Origins

By | March 23, 2017

Murine neural tubes, with each image highlighting a different embryonic tissue type (blue). The neural tube itself (left) grows into the brain, spine, and nerves, while the mesoderm (middle) develops into other organs, and the ectoderm (right) forms skin, teeth, and hair.

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image: Image of the Day: Manipulative Melanomas

Image of the Day: Manipulative Melanomas

By | March 20, 2017

Early-stage melanoma cells alter proteins in nearby skin cells to create a favorable environment for cancer progression.

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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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Researchers report growing a mouse embryo using two types of early stem cells.

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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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