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image: The First Americans

The First Americans

By | July 23, 2015

Two genetic studies seeking to determine how people first migrated to North and South America yield different results.

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image: Antibiotic Resistance Can Boost Bacterial Fitness

Antibiotic Resistance Can Boost Bacterial Fitness

By | July 22, 2015

In some pathogenic bacteria, certain antibiotic resistance–associated mutations may also confer an unexpected growth advantage.

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image: Underground Immunity

Underground Immunity

By | July 16, 2015

Arabidopsis thaliana defense hormones shape the plant’s root microbiome. 

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image: Bone Marrow Makes New Fat Cells

Bone Marrow Makes New Fat Cells

By | July 16, 2015

The origins of adipocytes have been hotly debated, but a human study supports the idea that the bone marrow takes part. 

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image: Calorie-Restricted Yeast Live Longer

Calorie-Restricted Yeast Live Longer

By | July 14, 2015

Calorie restriction in the organism extends lifespan, supporting a long-standing view that had been challenged by a study published last year.

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image: Microbiome Teams Up Against <em>C. diff</em>

Microbiome Teams Up Against C. diff

By | July 14, 2015

Researchers build a mathematical model that can predict whether a mouse will be infected by Clostridium difficile based on the microbes found in its GI tract.

1 Comment

image: Toward Blood-based Cancer Detection

Toward Blood-based Cancer Detection

By | July 7, 2015

Circulating tumor cells, exosomes, and DNA can improve the diagnosis of many cancers. But are liquid biopsies ready for prime time?

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image: Evolution of Kin Discrimination

Evolution of Kin Discrimination

By | July 6, 2015

A bacterium’s ability to distinguish self from non-self can arise spontaneously, a study shows, reigniting questions of whether the trait can be considered an adaptation.

3 Comments

image: CF Gene Therapy Shows Promise

CF Gene Therapy Shows Promise

By | July 6, 2015

The results of a Phase 2 trial suggest that delivering normal copies of the gene that causes cystic fibrosis may slow lung decline.

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image: Week in Review: June 29–July 3

Week in Review: June 29–July 3

By | July 3, 2015

Sex differences in processing pain; clue in flu vaccine–narcolepsy link found; early antibiotic use affects the gut microbiome; lizard sex determined by genes, then temperature

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