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Virologists challenge the hypothesis that mimiviruses possess a nucleic acid defense mechanism.

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image: Giant Virus Has CRISPR-like Immune Defense

Giant Virus Has CRISPR-like Immune Defense

By | March 2, 2016

The genome of a mimivirus strain resistant to a virophage has repeated phage sequences alongside nuclease- and helicase-coding sections.

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image: Contributors

Contributors

By | March 1, 2014

Meet some of the people featured in the March 2014 issue of The Scientist.

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image: Let There Be Life

Let There Be Life

By | March 1, 2014

How did Earth become biological?

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image: Viruses Reconsidered

Viruses Reconsidered

By | March 1, 2014

The discovery of more and more viruses of record-breaking size calls for a reclassification of life on Earth.  

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image: “Alive” and In Focus

“Alive” and In Focus

By | October 1, 2012

Imaging viruses in action

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image: Genome Digest

Genome Digest

By | November 2, 2011

Meet the species whose DNA has recently been sequenced.

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image: Cellular Origins of Giant Viruses?

Cellular Origins of Giant Viruses?

By | October 16, 2011

The largest virus to be sequenced prompts researchers to consider whether giant viruses were once full-fledged living organisms.

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