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The Origins of O

By | May 1, 2015

A strain of HIV that has afflicted more than 100,000 people emerged from gorillas.

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Hearts on Trial

By | May 1, 2015

As researchers conduct the most rigorous human trials of cardiac cell therapies yet attempted, a clear picture of whether these treatments actually work is imminent.

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Bacterial Taxis Deliver Proteins

By | April 28, 2015

Reengineered protein-shuttling machinery can be used to inject a particular protein into mammalian cells, according to a proof-of-principle study.

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image: Viral Protector

Viral Protector

By | April 21, 2015

A retrovirus embedded in the human genome may help protect embryos from other viruses, and influence fetal development.

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image: How a Popular Probiotic Works

How a Popular Probiotic Works

By | April 16, 2015

Eating a type of bacterium encourages the activity of other gut microbes, according to a small study.

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image: Embryonic Stem Cell Pioneer Dies

Embryonic Stem Cell Pioneer Dies

By | April 2, 2015

Leroy Stevens, who discovered pluripotent embryonic stem cells in mice, has passed away at age 94.

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image: Enzyme Improves CRISPR

Enzyme Improves CRISPR

By | April 1, 2015

A smaller Cas9 protein enables in vivo genome engineering via viral vectors.

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Contributors

By | April 1, 2015

Meet some of the people featured in the April 2015 issue of The Scientist.

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image: In Custody

In Custody

By | April 1, 2015

Expert tips for isolating and culturing cancer stem cells

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image: Manipulative Microbiomes

Manipulative Microbiomes

By | April 1, 2015

Gut bacteria control tumor growth via the mammalian immune system.

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