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What we can know about biology before the last universal common ancestor is limited—and we should be circumspect in filling in the gaps.

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Acute bouts of diarrhea could have lasting effects on the microbiota and host immune system activation, a mouse study suggests.

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The receptors, found in so-called elite controllers who don’t need medications to keep the virus in check, suggest a new path toward immunotherapy.

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Researchers find that conserving marsupials on a predator-free island dampens their avoidance behaviors, which could mean trouble for their reintroduction to mainland Australia.

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image: New Insights to Improve CAR T Cells’ Safety

New Insights to Improve CAR T Cells’ Safety

By Vicki Brower | June 5, 2018

Drugs approved to treat rheumatoid arthritis block cytokines, the molecules responsible for severe side effects from the immunotherapy, and reduce symptoms in mice.

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image: Human-Specific Genes Implicated in Brain Size

Human-Specific Genes Implicated in Brain Size

By Abby Olena | May 31, 2018

Three members of a gene family called NOTCH2NL may have been involved in the evolution of humans’ big cortex.

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Genetic adaptations for human brain development also make us vulnerable to Alzheimer’s disease, according to a new study.  

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image: Scientist Who Received Millions From NIH Leaves Alabama Posts

Scientist Who Received Millions From NIH Leaves Alabama Posts

By Ivan Oransky, Retraction Watch | May 24, 2018

An investigation finds 20 papers by Santosh Katiyar, who studied alternative treatments for cancer, include image manipulation.

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The finding confirms that a cluster of cells that directs the fate of other cells in the developing embryo is evolutionarily conserved across the animal kingdom.

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image: Could a Dose of Sunshine Make You Smarter?

Could a Dose of Sunshine Make You Smarter?

By Ruth Williams | May 17, 2018

Moderate ultraviolet light exposure boosts the brainpower of mice thanks to increased production of the neurotransmitter glutamate.  

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