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Rather than getting a gene for its original function, a horizontal gene transfer provides the raw material for evolutionary innovation.

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Drug-free environments, such as a designated ward in a hospital, might reduce the strength of selection for resistance.

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Authors of a new study suggest that 520-million-year-old structures, previously identified as the brains of ancient arthropods, are instead preserved microbial biofilms.

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image: Opinion: We Have Been Naive About Naive T Cells

Opinion: We Have Been Naive About Naive T Cells

By Theo van den Broek, José A.M. Borghans, and Femke van Wijk | April 6, 2018

Human naive T cells are far more heterogeneous than has long been appreciated, having implications for vaccine strategies.

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In the largest study of its kind to date, researchers find more than 850 rare, heritable genetic alterations that can predispose humans to cancer.

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image: Frogs Fight Back From Fungal Attack

Frogs Fight Back From Fungal Attack

By Ruth Williams | March 29, 2018

A decade after chytridiomycosis killed scores of amphibians in Panama, some species are recovering. New research indicates why.  

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image: Is the Interstitium Really a New Organ?

Is the Interstitium Really a New Organ?

By Abby Olena | March 28, 2018

A study confirms that the spaces between cells are fluid-filled, rather than tightly packed with connective tissue, but pathologists say the findings’ implications remain to be seen.

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image: Bees’ Molecular Responses to Neonicotinoids Determined

Bees’ Molecular Responses to Neonicotinoids Determined

By Catherine Offord | March 22, 2018

Researchers pinpoint a protein that can metabolize at least one of the insecticides, highlighting a route to identifying compounds that are friendlier to the critical pollinators.

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Rather, the breast cancer mutation screen was classified as a type of medical device with obligations for the company to reduce risks to customers.

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image: Monitoring Mutations with Microfluidics

Monitoring Mutations with Microfluidics

By Ruth Williams | March 15, 2018

A device dubbed the “mother machine” enables real-time observation of mutagenesis in single bacterial cells.  

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