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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: 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: 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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image: Social Dominance Comes At a Cost

Social Dominance Comes At a Cost

By Richard Kemeny | March 5, 2018

Dominant male mammals are particularly at risk of infection by parasites.

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Patients with the rare autoimmune condition, highlighted in the Oscar-nominated film The Big Sick, currently have limited treatment options.

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Thousands of axons grew from the transplants and connected to damaged primate tissue, the first such demonstration in primates.

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Testing treatments on mini tumors may save time in identifying which therapies work best, a new study shows.   

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image: Stem Cell Vaccine Protects Mice From Cancer

Stem Cell Vaccine Protects Mice From Cancer

By Ruth Williams | February 15, 2018

Stem cells and cancer cells have enough molecular similarities that the former can be used to trigger immunity against the latter.

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image: Viruses Related to Zika May Also Harm Fetuses

Viruses Related to Zika May Also Harm Fetuses

By Ruth Williams | January 31, 2018

Studies in mice suggest that other flaviviruses, such as West Nile virus and Powassan virus, may cause birth defects, too. 

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image: Hibernating Rodents Feel Less Cold

Hibernating Rodents Feel Less Cold

By Abby Olena | December 19, 2017

Syrian hamsters and thirteen-lined ground squirrels are tolerant of chilly temperatures, thanks to amino acid changes in a cold-responsive ion channel. 

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